Engine oil Castrol or MOTUL

Better to use cheap oil and change often than to buy expensive oil and run it out to 10k+ miles. Personally I typically use Castrol products and change my gasoline engines at 3k and Diesel engines at 5k miles.

I use the castrol gtx high mile full synthetic 10w-40 and a sohn adapter with ideimitsu. I’m sure non of the name brands will hurt As long as you change it frequently.

I change every 10,000 km - 7000 mi.

Castrol or Mobil full synthetic.

To me that is much better than running any brand of oil longer.

I’m a Castrol 0W40 guy myself.

It doesn't seem like I burn any oil in my Rabbit. 0w-20 seems too light to me, also, I'm running Castrol Edge 10w-40.

I run Castrol GTX 10w40 in my FD. Premix TCW2 2stroke oil .5oz/gal.

Engine seems happy as can be.

I use mobil1 or castrol full synth 0W-20 for prius engines below 200k and 0W-30 for those above it. More than 30k mi now so far so good. I like the castrol better bec my engines sounds much quieter vs m1.

I use castrol magnatec beucase it has some kindof ionization tech where it sticks to metal surfaces to reduce start up wear which the prius is constanly starting/stopping.

I've been using Motul for hybrid cars.

If you want to do 5k oil changes, best to switch back to Castrol GTX or any cheapo oil as you'll have no significant advantage using synthetic for short periods of time.