Yet, another engine oil question

[JAJ]

Here's what the Owner's Manual says:

So, last year track season I set my target at keeping the oil level between the lower hole and about half way up, rather than trying to keep it at the top. I ran Motorcraft and when I changed it out at 5% life left, I sent it for a used oil analysis with Cat labs to get oxidation and nitration data - you don't get this with Blackstone, unfortunately - and the oil was in excellent shape. The UOA is on this forum somewhere. Anyway, the point is, don't fuss about keeping the oil at the top of the available space on the dipstick. So long as you're above the lower hole, you're good to go.

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[GT350Obsession]

After my oil change with 10qt the oil mark was at exact upper hole. Not at upper hash mark like in your picture.

As @RJay stated above, the dip stick is not a precision measuring device, but instead a guide.

 

[lenFeb]

So, last year track season I set my target at keeping the oil level between the lower hole and about half way up, rather than trying to keep it at the top. I ran Motorcraft and when I changed it out at 5% life left, I sent it for a used oil analysis with Cat labs to get oxidation and nitration data - you don't get this with Blackstone, unfortunately - and the oil was in excellent shape. The UOA is on this forum somewhere. Anyway, the point is, don't fuss about keeping the oil at the top of the available space on the dipstick. So long as you're above the lower hole, you're good to go.

Thanks much!

 

[RJay]

Do you have oil/air separators installed on yours? I have FP oil separator on my and noticed the exact amount of oil missing from the engine collected in oil separator. It's not burning oil per se.

Yes, I have FP O/A's on both sides.

This is what I got out of the passenger side at 2K/4K/6K miles on the oil.

Maybe 3.8 ounces - and yes there was a slight lowering on the dipstick over that 7500 miles - maybe pretty close to a 1:1 relationship.

 

[Lilmags500]

I try to keep mine between the upper hash line and the top hole .... It is a dangerous proposition to let these motors run low on oil .

 

[Hack]

It's really easy. I use syringe with measurement scale to remove oil from oil separator. I removed around 8 oz(1/4 quart) from oil separator. The oil level on dipstick is at 3/4 between lower and upper hole. Distance between lower and upper holes equates one quart. Hope this explained.

It's funny you would say this about it being the same quantity of oil in the separator as the decrease in the engine. What I've recovered from the oil/air separator IMO can only loosely be called oil. I believe there's typically a lot of water and other materials in there.

Here's what the Owner's Manual says:

It's funny you would say this about it being the same quantity of oil in the separator as the decrease in the engine. What I've recovered from the oil/air separator IMO can only loosely be called oil. I believe there's typically a lot of water and other materials in there.

So, last year track season I set my target at keeping the oil level between the lower hole and about half way up, rather than trying to keep it at the top. I ran Motorcraft and when I changed it out at 5% life left, I sent it for a used oil analysis with Cat labs to get oxidation and nitration data - you don't get this with Blackstone, unfortunately - and the oil was in excellent shape. The UOA is on this forum somewhere. Anyway, the point is, don't fuss about keeping the oil at the top of the available space on the dipstick. So long as you're above the lower hole, you're good to go.

That's a great illustration and I agree that many people on here get it wrong.

I try to keep mine between the upper hash line and the top hole .... It is a dangerous proposition to let these motors run low on oil .

They aren't low on oil unless they are below the bottom hole.

 

[Balatgek1]

After my oil change with 10qt the oil mark was at exact upper hole. Not at upper hash mark like in your picture.

This was a top off from my 17 not after oil change. (Oil got down to half the lower hole put in one Qt. warmed up, sat for 15 min. and that's where it was.) With my 19 after first oil change the oil was a little over top hole and the dealer said not to worry. I'm guessing the variances on dip stick after change is how much old oil gets drained.

 

[Spart]

After my oil change with 10qt the oil mark was at exact upper hole. Not at upper hash mark like in your picture.

Same. Caveat: I always measure with the oil at operating temp after shutting the car off and waiting 15 minutes.

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