Engine oil Mobil or Castrol

I use Castrol Edge 5W-40; works just fine

Glad to be of help helmyv5. In one message, I mentioned I'd try a more expensive oil next time. I've now been running Castrol EDGE FST-Ti for the last two oil change intervals. Normally, oils are very hard to tell apart from one another (Like how the engine sounds, gas mileage, other \"seat of the pants\" stuff) But, this time I can definitely spot one difference, which is noticeably less sludge in the PCV system than with the Helix Ultra.

My 2001 330i loves Mobil 1 0w-40

Been running it for years on the stuff .

Castrol Edge Professional 0W-20 seems to be the VAG recommended oil for their 508.00 requirements. Everything I’ve read about the 0w oil has been positive as it holds up extremely well in cold weather and severe heat.

I buy the Castrol Edge OE 5w30 that DAP sells and change the oil preemptively, always with VW brand filters. Has all the VW certs necessary, is what VW uses, and doesn't break the bank.

I use Mobil 1 European Car Formula 0W-40. This meets VW 502.00 specs and has a slightly wider multigrade range that suits the climate where I live: it'll be -15°F overnight this week, but well up into the nineties in summer. This Mobil 1 is also readily available almost anywhere, and was also approved for our previous BMW 525i and is for the Audi Q5 that's replaced it, so using the same oil for both simplifies my automotive life.

at 30K and third oil change @ 10K, my oil analysis went to the waste oil furnace, it said the oil was perfect. First change @10K was Castrol 0W40, last two were Mobil 1 0W40.

I'm at 50k using M1 0W-40 at around a 8k oil change interval. Did the first change at 5k. Ran it up to 10k for the last change. Not burning a drop of oil. That is like a miracle for a VAG engine.

Either Mobil 1 or Castrol GTX - never had oil issues with either one.

I've used 15w50 Mobil 1 with no problems. It wasn't bad. It acctually good. But, it didn't make one bit difference, so I've used it only once, and went back to the regular 0w40 Mobil 1.