Switching to synthetic oil question

[sirsunnyslayer]

I've been running the manufactures recomended oil since new and now am thinking of switching over to a synthetic oil and I have a question. The motor in question is an oil injected carbureted two stroke.

Can a guy mix the two oils or do I have to drain what is left in the resevoir?

[walterking]

it will hurt nothing to mix the oil all synthetics are compatible with standard petroleum oils

[Whoaru99]

Mixing shouldn't hurt anything. I ran mine lower than usual when I changed over just so the mix was less.

[theoilman]

They will all mix. AMSOIL does recommend to minimize mixing. Run your current oil down until your warning light/buzzer kicks, then just top the oil tank off with the new. Never take a chance running one all the way out! Also, many are extremely difficult to drain, or at the least are very messy to drain.