ORIGINAL: 42etus
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.
synthetics arnt not better in the USA (in europe they are just as good as castor) when compared to castor. the reason is most fuels use klotz or Avenger synthetic oils which arnt bad but they are not as good at preventing wear compared to castor, and they boil off at higher temps which will fry your engine if you have a lean run.
castor does have some side affects such as gumming the engine and such but its nothing a little cleaning wont fix.
imo their is no reason not to use castor in small amounts (2-5%), im running all castor oil (16.6%) and not having problems with engines gumming up (i do fly a lot so that cant hurt), the only thing i do have is more oil on the wing, which tells me the oil is doing its job, not being burned in the cylinder aka doing nothing.
castor is also recommended in abc engines due to the fact the entire piston is touching the cylinder walls, if you lean it to much and the synthetics boil off their is a ton of wear on the piston/sleeve. also when first starting the engine castor helpes prevent wear from the "pinch" of the abc because the liner hasnt expanded yet.