Are Turbos Hard on Oil?

specifically VW 504.00/507.00 and 508.00/509.00
MB 229.71

I think the 508/509 might actually be the toughest turbo test spec currently active. The TDI Turbocharger Deposit Test is pretty tough and this is one way in which 508/509 is actually more demanding than even 504/507.

Not sure what the Dexos turbo test is or how it compares.
Did a little looking on the VW 508/509. Looks like that applies to 0W-20 only.

VW 504/507 applies to 0W-30 and 5W-30.

Mobil1 ESP X2 0W-20 meets the VW 508/509 spec. Mobil1 ESP 0W-30 and ESP 5W-30 meets VW 504/507.
 
If the oil was dark at 1000 miles this tells me a few things:

1) The OCI's were beyond what most of us do here.
2) Cheap Oil was Used
3) The oil was never checked between OCI's

I am positive on Number 1 and 2, Number 3 is kind of a guess.
Probably true in this case. Not sure in every case.

My 2021 GMC Canyon with a 3.6L has oil that turned pretty dark at 2k miles with VRP in it. Truck has 71k miles that is 90% highway and not driven hard or used for towing. Since I got it at 19k miles every change has had an oil and/or additive to help with cleaning.

I've always used top-shelf oils like M1 EP, Castrol Edge, etc. 5k OCI's. When I got it I did 3 OCI's with HPL's EC-30. I've had a bottle of Rislone in there and I've tried Hot Shot's "Stiction Eliminator". Last two OCI's were with HPL's Premium Plus PCMO. Oil filters have always been free of debris.

I'm 2k into an OCI with VRP and the oil is already pretty dark. Might just be the oil. I doubt my engine has significant deposits, maybe some varnish. Either the VRP has a tendency to turn dark or it really is cleaning things up that the other oils including HPL missed.
 
Probably true in this case. Not sure in every case.

My 2021 GMC Canyon with a 3.6L has oil that turned pretty dark at 2k miles with VRP in it. Truck has 71k miles that is 90% highway and not driven hard or used for towing. Since I got it at 19k miles every change has had an oil and/or additive to help with cleaning.

I've always used top-shelf oils like M1 EP, Castrol Edge, etc. 5k OCI's. When I got it I did 3 OCI's with HPL's EC-30. I've had a bottle of Rislone in there and I've tried Hot Shot's "Stiction Eliminator". Last two OCI's were with HPL's Premium Plus PCMO. Oil filters have always been free of debris.

I'm 2k into an OCI with VRP and the oil is already pretty dark. Might just be the oil. I doubt my engine has significant deposits, maybe some varnish. Either the VRP has a tendency to turn dark or it really is cleaning things up that the other oils including HPL missed.
Oil color is pretty much meaningless all things considered. Some oils go dark quick depending on the type of AO used among other things.
 
Did a little looking on the VW 508/509. Looks like that applies to 0W-20 only.

VW 504/507 applies to 0W-30 and 5W-30.


Mobil1 ESP X2 0W-20 meets the VW 508/509 spec. Mobil1 ESP 0W-30 and ESP 5W-30 meets VW 504/507.
Correct. Similar oils in terms of SAPS but different in grade and minimum HT/HS. 504 00 is an excellent approval and is appropriate for many vehicles.
 
This thread brings back memories of when turbo timers were a big deal, especially for the guys with WRXs and Lancer Evolutions. For the folks who haven't heard of a turbo timer, it's a device that keeps the car running for a few minutes after you've parked it to keep oil circulating through the turbo until it cools to avoid "coking".

Anybody hear of coking issues these days? Turbos certainly aren't running any cooler, but I'm under the impression that modern oils resist it better.
Generally expansion tanks that cool the turbo with convection became standard fare. Once the car is off, the turbo is being cooled passively with coolant.

We put turbo timers on things that didn't have this feature for in case shut-off was happening while temps were high.
 
I'm not sure there is one. Comparing oils meeting different specs can be tricky. ESP is probably the better overall oil though based on the specs it meets. The EP oils are built for 20k mile drains though so they're also very good.
The EP IMO, WAS good. New version with that pour point indicates it became "we can get away with it" oil.
I used it in Sienna before, I would use it in Sequoia if the formulation were like API SN one. But, it is a race to the bottom among those API ILSAC oils.
Those Euro approvals leave less room for "maneuvering." I used Pilot 0W20 EP before, now I use ESP 0W20 X2 simply because. it is better oil in every aspect: stronger additive pack, more PAO, some ester etc.
 
Generally expansion tanks that cool the turbo with convection became standard fare. Once the car is off, the turbo is being cooled passively with coolant.

We put turbo timers on things that didn't have this feature for in case shut-off was happening while temps were high.
Many engines have an auxiliary electric pump that keeps circulating coolant too.
 
The EP IMO, WAS good. New version with that pour point indicates it became "we can get away with it" oil.
I used it in Sienna before, I would use it in Sequoia if the formulation were like API SN one. But, it is a race to the bottom among those API ILSAC oils.
Those Euro approvals leave less room for "maneuvering." I used Pilot 0W20 EP before, now I use ESP 0W20 X2 simply because. it is better oil in every aspect: stronger additive pack, more PAO, some ester etc.
I was told ANs can reduce PP so I'm wondering if it could also be that. It dropped when they made the move to Triple Action. I'm of the opinion that the EP oils greatly exceed the min API ILSAC tests, for example Mobil 1 exceeds the oxidation resistance aspect of the IIIH test by 20x. (305F oil for 90 hours straight). But generally speaking yes the run-of-the-mill API oils are not that great.

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Probably true in this case. Not sure in every case.

My 2021 GMC Canyon with a 3.6L has oil that turned pretty dark at 2k miles with VRP in it. Truck has 71k miles that is 90% highway and not driven hard or used for towing. Since I got it at 19k miles every change has had an oil and/or additive to help with cleaning.

I've always used top-shelf oils like M1 EP, Castrol Edge, etc. 5k OCI's. When I got it I did 3 OCI's with HPL's EC-30. I've had a bottle of Rislone in there and I've tried Hot Shot's "Stiction Eliminator". Last two OCI's were with HPL's Premium Plus PCMO. Oil filters have always been free of debris.

I'm 2k into an OCI with VRP and the oil is already pretty dark. Might just be the oil. I doubt my engine has significant deposits, maybe some varnish. Either the VRP has a tendency to turn dark or it really is cleaning things up that the other oils including HPL missed.
Is this a GDI engine? In my two vehicles which are port injected, the oil stayed quite clear for much of the OCI. It only turned a slight amber color towards the end of the OCI. Never very dark.
 
It is interesting because the current FA24F engine that is used in both the WRX and Outback (+Ascent & Legacy) differs primarily in tuning because the WRX version of the engine requires 91 octane minimum while the Outback version only requires 87 octane and there is a slight variation in power output.
🔥
Its because sports car and its sportier with higher octane?
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Run ESP on the GM Turbo test or IIIH and get back to me. You can't. Being you can't you don't know if it is better.

Two things that keep popping up from people that are complete nonsense:

All API licensed oils are formulted to barely meet the specs. Not true.
Euro oils by default are better than API oils that greatly exceed the stringent GM Turbo, TEOST, IIIH, IVB tests. Not true.




I'm not sure there is one. Comparing oils meeting different specs can be tricky. ESP is probably the better overall oil though based on the specs it meets. The EP oils are built for 20k mile drains though so they're also very good.
Am I misunderstanding your argument then? You seemed to be arguing that Euro spec oils are no better than API spec oils earlier.

Or are you saying that API spec oils that far exceed the requirements of specific tests are the same as Euro oils? Would that just be Amsoil then? They’re the only ones who publish their data it seems.
 
Am I misunderstanding your argument then? You seemed to be arguing that Euro spec oils are no better than API spec oils earlier.

Or are you saying that API spec oils that far exceed the requirements of specific tests are the same as Euro oils? Would that just be Amsoil then? They’re the only ones who publish their data it seems.
I'm basically saying not all API/SQ oils are the same and that some would meet/exceed certain Euro tests IMO, however some of the tests are also different. The IIIH is used for API/ILSAC. The Euro OEM's have their own testing.

See this thread:

 
I'm basically saying not all API/SQ oils are the same and that some would meet/exceed certain Euro tests IMO, however some of the tests are also different. The IIIH is used for API/ILSAC. The Euro OEM's have their own testing.

See this thread:


I think the problem is that without testing and certification, you're basically trusting others' opinions on one API spec oil that it will do better than the cheapest API spec option. Or you're trusting the marketing. The Euro tests and certs are just easier.

Besides Amsoil, which API spec oils do you think fall into that category of exceeding Euro tests and are better than the others?
 
I think the problem is that without testing and certification, you're basically trusting others' opinions on one API spec oil that it will do better than the cheapest API spec option. Or you're trusting the marketing. The Euro tests and certs are just easier.

Besides Amsoil, which API spec oils do you think fall into that category of exceeding Euro tests and are better than the others?
It's apples/oranges. I have no way of knowing if IIIH or GM Turbo is as stringent as whatever OE Euro turbo test. However, I do know the IIIH has a range where oils can pass and fail and I know that NOT all API oils just barely pass. Some crush these tests and they're not easy tests to pass.

Amsoil top tier oil is their SS line, not Euro.

European oils in general are held to higher standards, but that doesn't mean your high end API oils are less capable in "certain" areas.

https://www.swri.org/sites/default/files/sequence-iiih-test.pdf
 
yeah, i often heard the radiator fan still spinning in many diesel van i drove in Europe after the ignition is off.

that's a different reason. if the engine was regenerating, the PSA (now stellantis) diesels would run the fan for 10 minutes even after shutdown. the fan is ran to cool the dpf exterior when parked, but also to increase the load on the engine when running.
 
Here is an example. Could ESP do a double length IIIH test and still score 40% better in terms of piston deposit cleanliness? Who knows.... That's 180 hours of oil held at 305F.

Mobil 1 Triple also crushed the IIIH. 20x better in terms of oxidation thickening.

 
Most people are saying that all our API/ILAC oils fall in the blue. I'm saying, no, many would exceed and hit the yellow parameter. They don't just meet bare minimum. When you buy Mobil 1 Extended Performance you should be getting an oil that greatly exceeds these tests.

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