Engine oil VALVOLINE or MOTUL

For the last 17 years I've run the recommended Valvoline Blue in all of my Cummins and so far the internals have been spotless when looking inside.

Motul 5w-30 [or 5w-40 when ambient temp is above 80] 8100 X-clean EFE, based on IAG's recommendation for the FA20

I live in the same area with the same motor and run Motul 300V competition 5w40 on my high mileage track car at the recommendation of my mechanic

'03 GX470, had 240K miles when I bought it just over a year ago. Now on my 2nd oil change at 245K miles with Valvoline High Mileage 5W-30 full synthetic and Fram XG3600 filter. It's quiet and doesn't burn or leak oil.

I would say 0w20 Motul 8100 is a solid choice.

I use Motul's 0w-20 "Eco-lite" and change about every 4-5 (or April-October really) with about 25 autocrosses and the highway driving to get to them.

I use Motul 300v 0w20, plus oil analysis from Blackstone Labs, currently every 6k miles until they tell me otherwise

Valvoline Advanced with black Wix filter!

Valvoline 5w-30 full synthetic for good cold starts in winter and a royal purple oil filter for good small particle filtration.

Motul 8100 5w-30