Owner reviews for engine oil

Dominator is a excellent oil

Dominator is great in saws. The only issue is that I'm small saws especially, and at thicker ratios, like more oil than 40:1, some bike oils will not burn completely and will gum up mufflers, screens, piston tops. Mostly high performance racing oils.

Castrol full sinthetic.

Or Motul 7100, even better.

Tie between Royal Purple or Pennzoil, choice usually based on availability or sales. I might slightly favor Pennzoil due to its connection with Shell as I exclusively use Shell 93 fuel for the additives.

I use Castrol on my z4. Works like a charm

Castro Synth. is all i ever used in my BMW 60,000miles runs perfect change every 7,000 miles

(5w-40)

Liquimoly is by far a better 5w40 to put in a bmw.

I change my oil at dealer every 10k miles. This time I am going to pay $299 for a package of 5 oil changes, with tire rotations, filter and all liquids fililled up if necessary.

After some research I heard people use 5w40 to quiet the motor down and lubricate the lifters better for high mileage engines. picked up some castrol edge 5w-40 and it runs buttery smooth, noticeably quieter and another big thing is oil consumption drops A LOT due to the oil being thicker and harder to burn or leak. I used to need maybe a quart a month now Ik down to half a quart a month.

I had consumption issues with Mobil-1 0W-40 in the W8, and Castrol/Valvoline 5W-40's showed signs of wear at higher mileage intervals when I ran a 10,000 OCI as recommended by VW.