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The Cars => 1965 GT350/R-Model => Topic started by: Mikelj5S230 on October 05, 2025, 01:10:07 PM

Title: Curious oil dipstick discrepancy
Post by: Mikelj5S230 on October 05, 2025, 01:10:07 PM
I don't know if anyone else has noticed this, but when I put the oil dipstick in any other way than the loop facing away from the block, I get a low reading, by a quart or two. Why is that I wonder?
Title: Re: Curious oil dipstick discrepancy
Post by: Bob Gaines on October 05, 2025, 01:39:34 PM
Quote from: Mikelj5S230 on October 05, 2025, 01:10:07 PMI don't know if anyone else has noticed this, but when I put the oil dipstick in any other way than the loop facing away from the block, I get a low reading, by a quart or two. Why is that I wonder?
The lower portion of the dip stick is curling up instead of going straight in consequently holding the bottom end of the stick from fully going into the oil resulting in the inaccurate reading. The obstruction that is the cause of this happening when you install the stick in a certain way will need further examination. I am not sure if this is worth worrying about given you get a good reading when installing with the loop facing away from the block.Just my thoughts.
Title: Re: Curious oil dipstick discrepancy
Post by: Mikelj5S230 on October 05, 2025, 01:52:06 PM
Thanks Bob, good explanation. I have seen this happen to some other cars I have with long drip sticks, but this one is pretty short. It did tempt me to add oil, until I repositioned it just in case. But I figured since the car was just newly restored and had hardly any miles on it, being more than a quart low was probably not the case.

Another question while you are here, is the rear window on an "S" model made of anything special? There are no stamps or codes on it like all the other windows, and some minor blemishes look funny for a standard glass window. Thanks.
Title: Re: Curious oil dipstick discrepancy
Post by: Bob Gaines on October 05, 2025, 02:00:49 PM
Quote from: Mikelj5S230 on October 05, 2025, 01:52:06 PMThanks Bob, good explanation. I have seen this happen to some other cars I have with long drip sticks, but this one is pretty short. It did tempt me to add oil, until I repositioned it just in case. But I figured since the car was just newly restored and had hardly any miles on it, being more than a quart low was probably not the case.

Another question while you are here, is the rear window on an "S" model made of anything special? There are no stamps or codes on it like all the other windows, and some minor blemishes look funny for a standard glass window. Thanks.
The rear window is standard Mustang stock. I have never seen or heard of a assemblyline original piece of glass to be void of trademark or date code. It is typical for high end new replacement glass to be typically acid etched with the proper trademark and date code to replicate the assemblyline. Worst case situation and this detail was forgotten on the restoration the trademark and date code information can be added to the glass without removal.
Title: Re: Curious oil dipstick discrepancy
Post by: Mikelj5S230 on October 05, 2025, 02:26:18 PM
Thanks, yes that is what I had thought too. I guess the restorer was not that careful (or cheap) about replacing this glass.
Title: Re: Curious oil dipstick discrepancy
Post by: Bob Gaines on October 05, 2025, 02:37:19 PM
Quote from: Mikelj5S230 on October 05, 2025, 02:26:18 PMThanks, yes that is what I had thought too. I guess the restorer was not that careful (or cheap) about replacing this glass.
As problems go this is a relatively easy one to solve . The biggest problem will be the logistics to coordinate with the person to acid etch the stencil onto the glass.
Title: Re: Curious oil dipstick discrepancy
Post by: Mikelj5S230 on October 05, 2025, 03:47:43 PM
Yes, having had this done several times on other restorations, it is just surprising a restorer would forget about or ignore something so simple.
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 06, 2025, 02:49:49 AM
Quote from: Mikelj5S230 on October 05, 2025, 01:10:07 PMI don't know if anyone else has noticed this, but when I put the oil dipstick in any other way than the loop facing away from the block, I get a low reading, by a quart or two. Why is that I wonder?

easy peasy solution

always make sure you insert the oil dip stick in the right way

another issue is incorrect marking on oil dip stick

we fixed that with the following


 we just changed the oil on our car poured in new oil

made sure that the car had the capacity of oil quarts in it we wanted

also assured the car was on a level surface when parked

then went about notching the oil stick with what we thought was the right amount in its oil pan

next time we checked the oil it was at or near the notch, mission accomplished

done deal

Title: Re: Curious oil dipstick discrepancy
Post by: shelbydoug on October 06, 2025, 09:09:37 AM
Something else that should be mentioned as far as the accuracy of the markings on the dipsticks.

Cars like the Mustang have the driveline installed not level but at an angle, not level.

Cars like the Pantera, Cobra, Mangusta have the driveline installed level.


This matters because it changes were the oil will show on the dipstick. You need to compensate for that and additionally, when you read the dipstick, the car should be sitting on level ground.
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 06, 2025, 09:58:22 AM
Quote from: shelbydoug on October 06, 2025, 09:09:37 AMSomething else that should be mentioned as far as the accuracy of the markings on the dipsticks.

Cars like the Mustang have the driveline installed not level but at an angle, not level.

Cars like the Pantera, Cobra, Mangusta have the driveline installed level.


This matters because it changes were the oil will show on the dipstick. You need to compensate for that and additionally, when you read the dipstick, the car should be sitting on level ground.

Very well expressed that's why:

we just changed the oil on our car poured in new oil

made sure that the car had the capacity of oil quarts in it we wanted

also assured the car was on a level surface when parked

then went about notching the oil stick with what we thought was the right amount in its oil pan

next time we checked the oil it was at or near the notch, mission accomplished
Title: Re: Curious oil dipstick discrepancy
Post by: shelbydoug on October 06, 2025, 10:19:35 AM
Quote from: FL SAAC on October 06, 2025, 09:58:22 AM
Quote from: shelbydoug on October 06, 2025, 09:09:37 AMSomething else that should be mentioned as far as the accuracy of the markings on the dipsticks.

Cars like the Mustang have the driveline installed not level but at an angle, not level.

Cars like the Pantera, Cobra, Mangusta have the driveline installed level.


This matters because it changes were the oil will show on the dipstick. You need to compensate for that and additionally, when you read the dipstick, the car should be sitting on level ground.

Very well expressed that's why:

we just changed the oil on our car poured in new oil

made sure that the car had the capacity of oil quarts in it we wanted

also assured the car was on a level surface when parked

then went about notching the oil stick with what we thought was the right amount in its oil pan

next time we checked the oil it was at or near the notch, mission accomplished

Yes. Good solution.

The point is, one should be aware of these variations in order to avoid the "Chicken Little...'the sky is falling" scenario.



The Pantera actually has a special dipstick and tube so it should be less of an issue.


My 302 in my '68 GT350 doesn't seem to have any significant issues.


The big culpret is the 428 in my '67 GT500. That one can easily show low depending on how the car sits. A novice most likely WILL have a conniption first time through?
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 06, 2025, 10:55:20 AM
Quote from: shelbydoug on October 06, 2025, 10:19:35 AM
Quote from: FL SAAC on October 06, 2025, 09:58:22 AM
Quote from: shelbydoug on October 06, 2025, 09:09:37 AMSomething else that should be mentioned as far as the accuracy of the markings on the dipsticks.

Cars like the Mustang have the driveline installed not level but at an angle, not level.

Cars like the Pantera, Cobra, Mangusta have the driveline installed level.


This matters because it changes were the oil will show on the dipstick. You need to compensate for that and additionally, when you read the dipstick, the car should be sitting on level ground.

Very well expressed that's why:

we just changed the oil on our car poured in new oil

made sure that the car had the capacity of oil quarts in it we wanted

also assured the car was on a level surface when parked

then went about notching the oil stick with what we thought was the right amount in its oil pan

next time we checked the oil it was at or near the notch, mission accomplished

Yes. Good solution.

The point is, one should be aware of these variations in order to avoid the "Chicken Little...'the sky is falling" scenario.



The Pantera actually has a special dipstick and tube so it should be less of an issue.


My 302 in my '68 GT350 doesn't seem to have any significant issues.


The big culpret is the 428 in my '67 GT500. That one can easily show low depending on how the car sits. A novice most likely WILL have a conniption first time through?

we concur
Title: Re: Curious oil dipstick discrepancy
Post by: csheff on October 14, 2025, 11:16:43 AM
Which would be a correct tube to install on the 67 500. are they all the same?
Title: Re: Curious oil dipstick discrepancy
Post by: Bob Gaines on October 14, 2025, 03:01:33 PM
Quote from: csheff on October 14, 2025, 11:16:43 AMWhich would be a correct tube to install on the 67 500. are they all the same?
Quote from: csheff on October 14, 2025, 11:16:43 AMWhich would be a correct tube to install on the 67 500. are they all the same?
Off the SB topic at hand however it is same throughout 67 GT500 production. A lot of people are concerned how the tube is seated into the block. Don't be fooled into thinking that the tube should be seated all the way to the raised stop on the tube length because it doesn't go down near that far. It is the same as a 67 390. You can feel the stop inside the block hole and or measure it to the surface so as to know how far the tube will go down into the block on the tube body. For clarification and so there is no confusion given this is brought up on a small block discussion the dipstick tube is different on a small block compared to the big block.
Title: Re: Curious oil dipstick discrepancy
Post by: shelbydoug on October 14, 2025, 05:48:13 PM
Quote from: Bob Gaines on October 14, 2025, 03:01:33 PM
Quote from: csheff on October 14, 2025, 11:16:43 AMWhich would be a correct tube to install on the 67 500. are they all the same?
Quote from: csheff on October 14, 2025, 11:16:43 AMWhich would be a correct tube to install on the 67 500. are they all the same?
Off the SB topic at hand however it is same throughout 67 GT500 production. A lot of people are concerned how the tube is seated into the block. Don't be fooled into thinking that the tube should be seated all the way to the raised stop on the tube length because it doesn't go down near that far. It is the same as a 67 390. You can feel the stop inside the block hole and or measure it to the surface so as to know how far the tube will go down into the block on the tube body. 

Good point to bring up. That tube is just weird. Original to the car, but still weird.

It positively looks like it is not installed far enough into the block as made. Probably some kind of a tale to go along with it originally?

With the various dipsticks with varying markings available, the combination is sure to freeze you in your tracks. You have to count the quarts going in, then reference it on your dipstick accurately.

I do not know if the confusion is enough to cause a brain aneurysm, but the scenario definitely caused severe "brain fog" in me. Fortunately it was at home and I did not need to find my way home. Not that time?
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 14, 2025, 06:13:35 PM
Quote from: shelbydoug on October 14, 2025, 05:48:13 PM
 You have to count the quarts going in, then reference it on your dipstick accurately.


Again here is the simple answer

1- make sure car is level in ground
2- count quarts going in to the car
3- stop let the oil settle in pan
4- make a mark on the dip stick
5- this is you new oil level reference
Title: Re: Curious oil dipstick discrepancy
Post by: Coralsnake on October 14, 2025, 06:15:44 PM
Unfortunately, once the oil starts circulating and the oil filter fills up, the level will change.
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 14, 2025, 06:34:20 PM
Quote from: Coralsnake on October 14, 2025, 06:15:44 PMUnfortunately, once the oil starts circulating and the oil filter fills up, the level will change.


of course silly, everyone knows that

the only time one checks the oil with the engine running is if you have a "dry sump" system

Just like all new C8 (mine) Corvettes have
Title: Re: Curious oil dipstick discrepancy
Post by: Susan on October 15, 2025, 11:33:48 PM
Quote from: shelbydoug on October 06, 2025, 09:09:37 AMSomething else that should be mentioned as far as the accuracy of the markings on the dipsticks.

Cars like the Mustang have the driveline installed not level but at an angle, not level.

Cars like the Pantera, Cobra, Mangusta have the driveline installed level.


This matters because it changes were the oil will show on the dipstick. You need to compensate for that and additionally, when you read the dipstick, the car should be sitting on level ground.

Yes,your advice is so useful.
Title: Re: Curious oil dipstick discrepancy
Post by: Coralsnake on October 16, 2025, 07:41:26 AM
"
QuoteSusan
#18

October 15, 2025, 10:33:48 PM
Quote from: shelbydoug on October 06, 2025, 08:09:37 AM
Something else that should be mentioned as far as the accuracy of the markings on the dipsticks.

Cars like the Mustang have the driveline installed not level but at an angle, not level.

Cars like the Pantera, Cobra, Mangusta have the driveline installed level.


This matters because it changes were the oil will show on the dipstick. You need to compensate for that and additionally, when you read the dipstick, the car should be sitting on level ground.

QuoteYes,your advice is so useful."




Gee, its getting to the point you cant tell the difference between their trolls and our trolls.

;D
Title: Re: Curious oil dipstick discrepancy
Post by: shelbydoug on October 16, 2025, 07:52:48 AM
Quote from: Coralsnake on October 16, 2025, 07:41:26 AMGee, its getting to the point you cant tell the difference between their trolls and our trolls.

 ;D

At some point, isn't there an equation where they cancel each other out? It occurs to me that the only solution is to be positive about all posts? We can't save people from being willing participants in things like the " Jonestown massacre". They can only save themselves.

There isn't anyone here that is a messiah, as much as they think that they are. Individuals must be able to see that for themselves.
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 16, 2025, 08:04:07 AM
Quote from: Susan on October 15, 2025, 11:33:48 PM
Quote from: shelbydoug on October 06, 2025, 09:09:37 AMSomething else that should be mentioned as far as the accuracy of the markings on the dipsticks.

Cars like the Mustang have the driveline installed not level but at an angle, not level.

Cars like the Pantera, Cobra, Mangusta have the driveline installed level.


This matters because it changes were the oil will show on the dipstick. You need to compensate for that and additionally, when you read the dipstick, the car should be sitting on level ground.

Yes,your advice is so useful.

Hi Sue what year is your shelby?
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 16, 2025, 08:11:38 AM
Quote from: shelbydoug on October 16, 2025, 07:52:48 AM
Quote from: Coralsnake on October 16, 2025, 07:41:26 AM;D

At some point, isn't there an equation where they cancel each other out? It occurs to me that the only solution is to be positive about all posts? We can't save people from being willing participants in things like the " Jonestown massacre". They can only save themselves.

There isn't anyone here that is a messiah, as much as they think that they are. Individuals must be able to see that for themselves.

Truly an unfortunate series of events in Guyana that led to this tragic loss.

But people keep drinking the kool aid on a daily basis.

A lot of sheep in this world...

Let's get back to fixing that "dip stick"

Still think what I said previously about filling the pan up with oil and THEN notching the dip stick is the answer
Title: Re: Curious oil dipstick discrepancy
Post by: roddster on October 16, 2025, 11:46:31 AM
Never ends, tune in tomorrow for another post featuring some obscure detail about what we all ready have learned.I
Title: Re: Curious oil dipstick discrepancy
Post by: Coralsnake on October 16, 2025, 12:12:51 PM
QuoteHi Sue what year is your shelby?

Apparently, the trolls cant tell each other apart either.

😂😂
Title: Re: Curious oil dipstick discrepancy
Post by: JohnSlack on October 16, 2025, 12:24:03 PM
Quote from: shelbydoug on October 16, 2025, 07:52:48 AM
Quote from: Coralsnake on October 16, 2025, 07:41:26 AMGee, its getting to the point you cant tell the difference between their trolls and our trolls.

 ;D

At some point, isn't there an equation where they cancel each other out? It occurs to me that the only solution is to be positive about all posts? We can't save people from being willing participants in things like the " Jonestown massacre". They can only save themselves.

There isn't anyone here that is a messiah, as much as they think that they are. Individuals must be able to see that for themselves.

Pete, ShelbyDoug,

I have found relief in going through the threads ignoring trolls by turning them into a little yellow box. This little yellow box tells me that I'm ignoring this person, however if for some bizarre reason someone else found relevance in an answer posted by a user who is being ignored it gives you a little link to open that user's post.

Kind of an anti-troll kit, then except for the fact that first thing in the morning they have populated the unread posts selection with their self-important drivel..... well if the moderators don't ban, then the population needs to ignore.

Ignore tutorial
https://www.simplemachines.org/community/index.php?topic=49149.0
Title: Re: Curious oil dipstick discrepancy
Post by: csheff on October 31, 2025, 05:50:25 PM
I'm having a hard time finding a oil dip stick tube that will fit the block. Anyone have a place to get a correct one to fit the FE?
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on October 31, 2025, 07:26:09 PM
Quote from: csheff on Today at 05:50:25 PMI'm having a hard time finding a oil dip stick tube that will fit the block. Anyone have a place to get a correct one to fit the FE?


Easy Peasy

I would attempt to get a o.e.m. one

If all fails I would purchase these SD repros

Then change the oil, put in how many quarts YOU want it to measure in your oil pan.

We RE-marked our dipstick to reflect what WE think is the correct amount in OUR oil pan

Best of luck on your endeavors
Title: Re: Curious oil dipstick discrepancy
Post by: csheff on November 04, 2025, 02:07:57 PM
So who makes a dig stick tube that fits the Fe or .428 block correctly? When I mean correctly I meant the part that goes into the block. Not how far in but correct dia to fit. I'm finding most all I've come across the dia that is suppose to fit the block is to big.
Title: Re: Curious oil dipstick discrepancy
Post by: shelbydoug on November 04, 2025, 03:03:06 PM
Quote from: csheff on November 04, 2025, 02:07:57 PMSo who makes a dig stick tube that fits the Fe or .428 block correctly?

I think that the answer is that all of them work but look like they do not. Even the originals look like they are wrong.
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on November 04, 2025, 03:31:40 PM
Quote from: shelbydoug on November 04, 2025, 03:03:06 PM
Quote from: csheff on November 04, 2025, 02:07:57 PMSo who makes a dig stick tube that fits the Fe or .428 block correctly?

I think that the answer is that all of them work but look like they do not. Even the originals look like they are wrong.

Precisely + 1

that's what that guy had said :

Then change the oil, put in how many quarts YOU want it to measure in your oil pan.

We RE-marked our dipstick to reflect what WE think is the correct amount in OUR oil pan

Reminds me if the Abbott and Costello
Who is on first ?

Got to be the World Series Champs the DODGERs are on first!
Title: Re: Curious oil dipstick discrepancy
Post by: csheff on November 05, 2025, 01:25:48 PM
bump
Title: Re: Curious oil dipstick discrepancy
Post by: Bob Gaines on November 05, 2025, 05:44:42 PM
Quote from: csheff on October 31, 2025, 05:50:25 PMI'm having a hard time finding a oil dip stick tube that will fit the block. Anyone have a place to get a correct one to fit the FE?
One of the usual suspects Mansfield Mustang. http://mansfieldmustang.com/EngineMechanicalp1.html
Title: Re: Curious oil dipstick discrepancy
Post by: FL SAAC on November 05, 2025, 08:52:27 PM
Quote from: csheff on October 31, 2025, 05:50:25 PMI'm having a hard time finding a oil dip stick tube that will fit the block. Anyone have a place to get a correct one to fit the FE?



Quote from: csheff on November 05, 2025, 01:25:48 PMbump


csheff you are indeed very fortunate as I the Oil Dip Stick Tube genie have found you several options via businesses and private providers

Here they are, enjoy!