I'd say this is similar to what I have seen with fuel dilution/viscosity drop and why when upping the power on a boosted engine looking at the oil you use and UOAs is important. My Sportwagen makes peak ~22 psi and is >200hp/liter. Good video/data here.
LSJR shows how boost impacts your oil
- Thread starter TiGeo
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wemay
Site Donor 2023
Another good video from Lake
My Sportwagen makes peak ~22 psi and is >200hp/liter.
OK that's impressive! Upgraded internal parts I assume?
OK that's impressive! Upgraded internal parts I assume?
Patman
Staff member
I want to start off by saying that I really like that LSJ is doing videos like this that are different than the other oil videos online. It was an interesting video but I would also like to see the same test done with an engine for a regular street driven car as opposed to a 1300hp drag engine. For instance, maybe take a car that already has a turbo on it, and then add a lot more boost to the same setup and see what happens to the UOAs. I'm sure it would also show that stepping up to an oil with a higher HTHS would be better though.
And that brings me to another point, it would be nice to see that kind of test between two oils of the same viscosity, but one of them has a lower HTHS than the other. Example, vanilla M1 5w30 with it's 3.1 HTHS and M1 ESP 5w30 with it's 3.5 HTHS.
And that brings me to another point, it would be nice to see that kind of test between two oils of the same viscosity, but one of them has a lower HTHS than the other. Example, vanilla M1 5w30 with it's 3.1 HTHS and M1 ESP 5w30 with it's 3.5 HTHS.
It's hard to believe how low that viscosity got, basically the base oil viscosity
You can look at TiGeo's UOA for the first part
Ha no. VWs...strong like bull. Been tuned since new/5.5 years.
Unfortunately I don't have a pre-tune baseline buy do have stage 1 which upped boost on stock turbo to about 18psi if I remember correctly then to the upgraded OE turbos both at 22psi. I have UOAs since new/5.5 years/100k miles full charts/graphs.
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Yep. I had it bookmarked and now can't watch
The 5W-30 sheared down to 5.9cSt (and had like 4% fuel dilution) at 20 psi boost. It held up fine at lower boost levels. The engine does run high rpm, close to 9k, that won't help with the shearing.
Patman
Staff member
I wonder if he is re-editing it for some reason? I don’t see it listed on his channel anymore but maybe it will help reappear shortly.
Maybe it was supposed to be sheduled for later release?
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