Engine oil Shell or PETRONAS

We have been using T6 in all our race engines for over 10 years

Great stuff, wet clutch wear is good and the engines look great inside when we tear them down for rebuilds

I have used it for years in motorcycles. I have tried other super expensive oils and some of them shift a little nicer for longer, like Liquid Moly. But, T6 is a very high quality oil and I still use it and change it when shifting feels clunkier or 5k miles whichever comes first.

I've never seen T6 in 15-40. It's always 5-40.

Rotella is the best you don’t even need the synthetic. I run it in my 6 bolt 4G63 with 222,000 miles on it pushing 400 wheel horsepower and I’ve been a truck driver for 29 years it’s the industry standard????????

Rotella T6 ftw! I swapped my F800GS' oil to this and HifloFiltro filters years ago and have had zero issues. ~$30 for a full change compaired to BMW's asking price of $23/quart (straight highway robbery) and $20/filter so it was a no brainer saving almost $60/change

I use Shell Ultra Helix 0W-30 but I mean I drive diesel idk how it looks like for n20 or b48 engines

Brings me back to my WRX days, we all used to run Rotella T6 because it burned less oil thru our gigantic subaru ring gaps.

I always used Rotella 5w30 gas truck oil designed for “All Mileage” in my 2005 Nissan Frontier with 95k but it’s been discontinued. I really liked this oil as it seemed to be thicker and remained viscous for longer compared to others. My favorite part about it? NO LEAKS!

Shell Rotella T6 5w-40 in my 09 e90 335d (m57)

Supposedly should be changed every 13k miles but I do 7500 to hopefully help extend the life of the timing chain.

I’ve a 01 330ci with 284kms on it and I’ve been running Rotella 5w-40 T6 for a few years and it’s been really good. Keeps it good and clean for 10k change intervals. I probably end up adding 2-3L over that time, which was a vast improvement from when I got the car 30k ago.