Castrol 747

[Viktor_trx400]

I a going to be 2t rider and i confused with the oil. What do you think about Castrol 747? Or Castrol TTS? I use the bike only for mx entertainment and races. thanks

[ccdhowell]

The 747 is a castor based oil and will protect very well. The downside to a castor based oil is that it is dirtier on the exhaust side than a synthetic based oil.

The TTS is a synthetic based oil and should protect fine and will be cleaner than the 747. I'd run this at a 40:1 mixture ratio and enjoy the ride.

[Viktor_trx400]

ok, thanks

So I will use synthetic for entertainment and keep 747 for races. But now i have more doubts. My dealer tell that always i should to use 747 at 2%(50:1), what do you think about?

For break in what oil I need and %?

can i mix ¨gas with synthetic oil¨ with ¨gas with castor oil¨, or the gas tank need to be drained before refueling?

[ccdhowell]

Generally you must drain when changing between castor and synthetic, if not, the castor may fall-out of suspension. I always thought it was too much of a hassle to switch between the two types, unless you're running 10,000+ RPMs for extended times I'd just steer clear of the 747 and stick with the TTS.

[Viktor_trx400]

[ok, thanks