Interesting oil consumption theory I hadn't heard

[UPRjoe]

We offer a fix for the vacuum issue and PCV valve. The 2018+ problems stemmed from cylinder wall coating issues, looser ring gap, and a PCV valve that lets in too much air/vacuum, which pulls oil vapors. We have dealt with thousands of customers with this exact problem. The throttle trimming during cost/deceleration was an afterthought.

So we developed a UPR Adjustable PCV valve that can be adjusted to reduce the amount of vacuum, which has been extremely beneficial for 2018 Coyote engines in both the Mustang and the F150 trucks.

You install the UPR Adjustable PCV valve and start with the second-to-smallest jet, and you can start enjoying the improvement instantly. If your 5.0 Mustang or 5.0 F150 uses excessive oil, you can just install the smallest jet and never look back, enjoying your vehicle as intended.

Just wanted to share this as it has been a common issue since the 2018 motor was released.

The part number for the UPR adjustable PCV valve is 5045-24, and you can use coupon code (Mustang6G)

Joe@UPR

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[ice445]

We offer a fix for the vacuum issue and PCV valve. The 2018+ problems stemmed from cylinder wall coating issues, looser ring gap, and a PCV valve that lets in too much air/vacuum, which pulls oil vapors. We have dealt with thousands of customers with this exact problem. The throttle trimming during cost/deceleration was an afterthought.

So we developed a UPR Adjustable PCV valve that can be adjusted to reduce the amount of vacuum, which has been extremely beneficial for 2018 Coyote engines in both the Mustang and the F150 trucks.

You install the UPR Adjustable PCV valve and start with the second-to-smallest jet, and you can start enjoying the improvement instantly. If your 5.0 Mustang or 5.0 F150 uses excessive oil, you can just install the smallest jet and never look back, enjoying your vehicle as intended.

Just wanted to share this as it has been a common issue since the 2018 motor was released.

The part number for the UPR adjustable PCV valve is 5045-24, and you can use coupon code (Mustang6G)

Joe@UPR

Thanks, I forgot this was an option. Is it possible to use too small of an orifice and cause excessive crank case pressure? And how would you know if so? Would a catch can show if this is the issue also? I never really got that much accumulation in my cans.

 

[UPRjoe]

We maintain enough flow for the vacuum and negative crankcase pressure to be slightly less than the smallest factory 5.0 PCV valve. At the smallest jet size we offer, the UPR Adjustable PCV Valve can control oil consumption without being too restrictive.

When an engine is limited with vacuum it will squeak like a loose serpentine belt.

Not always. If the vacuum is too strong, it can pull the oil right through the catch can, so you will never know. This also depends on the catch can size and internal diffuser. The UPR Adjustable PCV Valve will slow the airspeed enough to collect more oil without any oil pulling through.

Joe@UPR

 

[WildHorse]

see evidence of oil burning on or around the ground strap on the plugs ?

 

[ice445]

see evidence of oil burning on or around the ground strap on the plugs ?

If you're talking about me then nope, every plug looks the same. Clean. All cylinder walls looked great. That's part of why I'm pretty confident it's this high vacuum issue and not a mechanical problem.

 

[WildHorse]

If you're talking about me then nope, every plug looks the same. Clean. All cylinder walls looked great. That's part of why I'm pretty confident it's this high vacuum issue and not a mechanical problem.

Then where's the oil going if there's (in your case) zero evidence of oil burning ? The PCV is a closed system.

Back in the day we use to make fully warmed up WOT 1/4 mile, shut the engine off when you let up, pull over and immediately check the plugs. That'll tell you right away.

Only other thing is that it's somehow evaporating in the oil pan.

 

[Gray Stang66]

We offer a fix for the vacuum issue and PCV valve. The 2018+ problems stemmed from cylinder wall coating issues, looser ring gap, and a PCV valve that lets in too much air/vacuum, which pulls oil vapors. We have dealt with thousands of customers with this exact problem. The throttle trimming during cost/deceleration was an afterthought.

So we developed a UPR Adjustable PCV valve that can be adjusted to reduce the amount of vacuum, which has been extremely beneficial for 2018 Coyote engines in both the Mustang and the F150 trucks.

You install the UPR Adjustable PCV valve and start with the second-to-smallest jet, and you can start enjoying the improvement instantly. If your 5.0 Mustang or 5.0 F150 uses excessive oil, you can just install the smallest jet and never look back, enjoying your vehicle as intended.

Just wanted to share this as it has been a common issue since the 2018 motor was released.

The part number for the UPR adjustable PCV valve is 5045-24, and you can use coupon code (Mustang6G)

Joe@UPR

I looked for the 5045-24 part number on the UPR website, but it did not come up. Did you mean to say the P/n was 5045-01 ? That one is non adjustable will that work the same ?

 

[JAJ]

Gentlemen - this issue has nothing to do with crankcase pressure. It's high vacuum in the intake manifold when the throttle's closed and you're engine braking. The vacuum in the intake becomes vacuum in the cylinders and that pulls oil from the cylinder walls up past the piston rings into the combustion chamber. If you had more vacuum in the crankcase, it might help, but unlikely.

 

[sk47]

Then where's the oil going if there's (in your case) zero evidence of oil burning ? The PCV is a closed system.

this issue has nothing to do with crankcase pressure. It's high vacuum in the intake manifold when the throttle's closed and you're engine braking. The vacuum in the intake becomes vacuum in the cylinders and that pulls oil from the cylinder walls up past the piston rings into the combustion chamber.

Hello; Here is your answer.

 

[sk47]

Hello; A few years ago Ferrari allegedly pulled a trick with their F1 cars. Seems they were burning oil in way it was essentially extra fuel.

 

[WildHorse]

Hello; Here is your answer.

And to know for sure is as I described above.

 

[ice445]

Then where's the oil going if there's (in your case) zero evidence of oil burning ? The PCV is a closed system.

Back in the day we use to make fully warmed up WOT 1/4 mile, shut the engine off when you let up, pull over and immediately check the plugs. That'll tell you right away.

Only other thing is that it's somehow evaporating in the oil pan.

Oh I wasn't implying it's not burning, it's just not assigned to any one particular cylinder, which is why there's no obvious evidence. It only uses a quart every 2k which isn't too bad really. I also don't go through any oil except if I'm engine braking or doing a lot of high rpm shenanigans, which leads credence to the high vacuum theory. I guess I'll try the pcv solution and see if anything changes

 

[galaxy]

Did I read correctly the PCV item is for '18 and up only? Pre '18 didn't have the same vacuum concerns?

 

[sk47]

#ford f150 oil consumption new dipstick measured 2018 2019 2020 5.0 coyote - YouTube
Hello; Seems the Coyote was first put into F-150's around 2018. I think the gen 1 Coyote was used in Mustangs years earlier.

Did I read correctly the PCV item is for '18 and up only? Pre '18 didn't have the same vacuum concerns?

I do not know why earlier year Mustangs would not be included. Part of the issue is speculated to be the way the V8 engine block is lined with an iron compound. No longer is a steel sleeve pressed in. The iron is melted to plasma level heat and somehow sprayed into the cylinder bores. Saves a lot of weight, maybe 200 pounds from what I read. That plasma created layer is very thin and apparently very hard.

 

[sk47]

I do not know why earlier year Mustangs would not be included. Part of the issue is speculated to be the way the V8 engine block is lined with an iron compound. No longer is a steel sleeve pressed in. The iron is melted to plasma level heat and somehow sprayed into the cylinder bores. Saves a lot of weight, maybe 200 pounds from what I read. That plasma created layer is very thin and apparently very hard.

FYI: Coyote 5.0 Plasma Transfer Wire Arc cylinder liners | 2015+ S550 Mustang Forum (GT, EcoBoost, GT350, GT500, Bullitt, Mach 1) - Mustang6G.com

Hello; May have found a possible answer. Seems it was around 2018 when the plasma transfer wire arc method of lining cylinders started in general production Mustang Coyote V8's as well as the trucks. I will assume this indicates earlier years Coyote V8's had pressed in steel cylinder liners. Implication being the earlier V8's do not have the plasma lined cylinders and so do not have the oil consumption issues?

Seems the plasma arc lining method had ben tried/tested in some more exotic V8's for a few years before 2018. Such as the 2016 GT350.

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