Heavier oil for FI?

[Demon Coyote]

5w20 when I was n/a and 5w50 now that I'm boosted. Amosil sig series.

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[ahl395]

Generally heavier oil does not mean better protection, so I stick with 5W20 Quaker State Ultimate Durability (same as Pennzoil Ultra Platinum). It may be different for track use, but mine is street only.

 

[Platinum_5.0]

Joe Gibbs FR20 here

 

[whatsup62]

5w20 Amsoil SS when NA - Boosted 5w30 Amsoil SS

 

[3beeps]

I'm using Rotella T6 5W-40

 

[Barrel]

Motorcraft 5W50 full synthetic. Decent oil.

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