Engine oil Shell or OEM Honda

I change mine every 5K.

Worth the piece of mind to me considering it a turbo engine.

I do mine every 5k. It maybe adds one extra oil change a year for me, if that.

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.

I switched from Castrol Edge 0W-40 to Shell Helix Ultra 5W-40 on my E46 325Ci and feel it runs a touch better and doesn't burn as much oil. Before I was adding 1L per \~3000km, now maybe 1L per 5-6000km...

First impressions - engine is noticeably quieter and smoother at idle. Engine temps is lower by 1 line. slightly better throttle response. As for fuel consumption, i have to drive more my usual route to know if there is an improvement.

Rotella T6 0W40.

Phattbotti tuning has done oil sample tests in multiple oils and he says Rotella T6 5w-40 is the best bang for the buck.

I use Castrol for the Nexon and Punch. The Safari uses Shell. Shell and Castrol are by far the best I've come across. Shell is much much better for the cold weather, by what I've observed.

My 96 xj I would put in 5 quarts of rotella 15-40 and a quart of Lucas oil stabilizer purred like a kitten

Rotella T5, since the T6 is a bit too expensive for a car that leaks. Also a purolator pure one filter. I am up in Northwest NJ. I change it when the HLAs get noisy. It was 4500 miles for the last one.