Engine oil AMSOIL or Lucas

Now, my wife's '16 FORESTER XT, 2.0 turbo, has 130,000 miles, Amsoil changes every 10,000 miles, and still burns NO oil.

Been running amsoil in my Vitpilen 701. Same engine and it's been great. I run the 15w-50 metric stuff though.

I’ve run amsoil in all my bikes and still do. Same with all my cars and trucks. Never had issues

For me amsoil signature series 0w20 a lot better than ravenol ehs 0w20.

I'm regularly using amsoil ss on my Honda L15z1 engine almost 7 years.

0W-20 Amsoil Signature Series 100% synthetic oil changed every 5k miles. Wix 57173XP filter.

As an avid user of AMSOIL, it’s a noticeable difference, amsoil is the king

With Amsoil even if it's not signature series I trust it more than any other 0w8.

I run Amsoil and my oil change interval is 25k so the answer is it depends.

I never ran Pennzoil, but I have Amsoil. Amsoil is good, but too expensive.

AMSOIL - DO NOT USE THIS CRAP , No seriously this stuff is crap and it's not worth the risk. I put this in my R32 at 24,000 and the motor blew at 24,500 due to a depleted rod bearing.