ORIGINAL: jimmyjames213
ORIGINAL: nrad2000
I've been using Power Master 15%. It's part synthetic and castro. Can I use Full Synthetic on my 46 size motor? Like Cool Power 15%?
if its an abc i wouldnt, if a ringed and its been broken in you could but i still wouldnt.
why would you want to switch? and to what brand?
castor oil is your friend, its a little messy but it helps keep your engines rust free and is a better lube than synthetics (here in the USA)
Actually, it depends on what you mean by "better". The synthetic oils are just as good and probably better at lubrication than castor oil is. Castor stands up to elevated temps better, but if one doesn't run an engine too lean, the synthetics are just fine. And then there is the mess issue. Oops, I don't mean to start a castor/synthetic argument here, sorry.