Tillotson 225 oil?

Curious if anyone knows a good alternative to the tillotson T4 racing oil, for the tillotson 225 engine? They obviously recommend that oil for there engine, but has anyone had good luck using anything else?

Thanks in advance.

Hi Colin

just make sure you aren’t mandated to use Tillotson oil. I read they put markers in the oil and if those markers aren’t there and the engine fails you lose all support.

Just another way Tillotson provide a parity in their competition. Oh and profits I guess?

If you’re not running under Tillotson, I’d run with driven’s kart oil.