which weight of m1 did u put in?

 

I use Mobil 1, been using it for 20+ years. I've had enough engines apart to compare the wear between conventional and sythetic. No comparison, synthetic has no buildup, wear ect. Just compare the varnish buildup on a dipstick on a conventional vs synthetic. As for the filter, some of the cheap ones do not have the anti-syphon valve. I use whatever premimum brand is on sale. I change the oil about every 8-10K miles.

 

Mobil 1 5W-30 good stuff