Upgraded turbo and oil viscosity

[OffTheWall503]

I am going BT soon and I'm concerned with higher boost pressures creating premature oil shearing or the 20wt oil not providing enough protection at higher RPM.

Can anyone with BT share experiences? I'm primarily interested in those who have had used oil analysis' performed during oil change intervals after upgrading to a bigger turbo.

As of right now I think I'm going to use Mobil 1 5W-30 or possibly even Mobil1 0W-40.

 

[TempeST]

IDK how it is in your environment, but mine always being hot, I am just sticking with the original 5-20so I can't really speak with what the protection factor would be as i haven't had an oil change with my BT yet. Just some tid bit of info, I went from 26psi on my stock turbo to only 21-22psi on my BT. You MAY not see the same pressures as you do on your stock turbo. But I'd be interested to see what others think and do as well.

 

[OffTheWall503]

I made a thread on BobIsTheOilGuy and the consensus seems to be either 5W-30 or 0W-40. I think the issue is not necessarily boost level but extra power levels and the stress added to engine internals. One interesting note is that the Focus RS uses a 5W-50 motor oil and the Ecoboost Mustang uses 5W-30, same engine but power levels between the two are significantly different.

You can keep tabs on it if you're interested:

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4283989/2016_Fiesta_ST_with_upgraded_t

 

[localbacon]

I'm sticking with 0/5w20 of whatever is on sale with Motorcraft filters. If I wasn't going with a oil cooler and separate oil temp/pressure gauge, I would think about putting in 5/10w30 to help the oil not thin out as much at higher temps. Oil opinions (especially on BITOG) are all over the place. Opinions aside, too thick an oil does not transfer heat as well and might now flow as well if bearing are designed for a lower viscosity.

 

[OffTheWall503]

This is true. You know what they say about opinions...

I may run this oil for a few thousand miles and get a UOA done to get an opinion.

 

[frankiefiesta]

I run 5w-20 but why not ask the people with most experience at higher power levels.. [MENTION=1098]DHM[/MENTION] [MENTION=759]Hijinx[/MENTION]

 

[Rhinopolis]

I just have the x37 hybrid, and I chose long ago to run amsoil 0w-30. Tuned for E30 and driven aggressively (after my AP shows 180F oil temps), my report on 3.5k miles is in the UOA thread.

http://www.fiestastforum.com/forum/attachment.php?attachmentid=12268&d=1479508301

 

[TUX15ST]

I could see going with 5w30 but i think 0w40 would be over kill.

 

[Crooked Letta]

I made a thread on BobIsTheOilGuy and the consensus seems to be either 5W-30 or 0W-40. I think the issue is not necessarily boost level but extra power levels and the stress added to engine internals. One interesting note is that the Focus RS uses a 5W-50 motor oil and the Ecoboost Mustang uses 5W-30, same engine but power levels between the two are significantly different.

You can keep tabs on it if you're interested:

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4283989/2016_Fiesta_ST_with_upgraded_t

Power wasn't so much a factor for the different oil. It has to do with HP2 performance requirements and being able to run 30 mins on track with out loss of performance. That 5W-50 is very good oil though, and one of the best 50 weights you can buy.

It is kind of a tough question you asked. I see no real harm in bumping up to 5w-30 as it's a very happy medium for really anything, but I also see no real harm in sticking with 5w-20. As you stated in the OP, kind of need oil analysis stats to verify. As with any oil though, change it often and you shouldn't have an issue.

 

[Hijinx]

I run 5w-20 but why not ask the people with most experience at higher power levels.. [MENTION=1098]DHM[/MENTION] [MENTION=759]Hijinx[/MENTION]

I run Brad Penn racing oil. 5w-30. I change it and Denso ITV24 every 3000mi.


Some Guy On The Internet

 

[OffTheWall503]

I run Brad Penn racing oil. 5w-30. I change it and Denso ITV24 every 3000mi.


Some Guy On The Internet

Interesting choice on the spark plugs, are they one step colder than the ITV22?

 

[Hijinx]

Interesting choice on the spark plugs, are they one step colder than the ITV22?

Correct. My CR is 11:1, and I max 34-36psi.


Some Guy On The Internet

 

[OffTheWall503]

Yeah that definitely makes sense then. Probably not needed on a BT car with less than 300hp?

 

[Hijinx]

Yeah that definitely makes sense then. Probably not needed on a BT car with less than 300hp?

"Nein" - Albert Einstein


Some Guy On The Internet

 

[M-Sport fan]

I run Brad Penn racing oil. 5w-30. I change it and Denso ITV24 every 3000mi.

Precaution, or do they actually foul out/wear that quickly?

 

[Hijinx]

Precaution, or do they actually foul out/wear that quickly?

A little bit of both.


Some Guy On The Internet

 

[WeTheNorth]

I run 5-40 liqui-moly and most online say that's the best for turbo engines.


Sent from my iPhone using Tapatalk