1000km oil change - which oil to use?

[tony1234]

Can you boys tell the difference in oils?

I can't.

BTW, I run full synth 15w50 in my 13:1 comp 12,000rpm dirtbike, and I can't tell the difference between 15w50 and 10w40, besides the 15w50 seems to last longer.

I can't either.But i wouldn't take the chance for no apparent gain in using a 50 grade over a 30 or 40 grade.

[Type R Positive]

I can't either.But i wouldn't take the chance for no apparent gain in using a 50 grade over a 30 or 40 grade.

Yeah, but he already has a bottle laying around.

I suppose he could try and exchange it, if he really wanted to.

[tony1234]

Yeah, but he already has a bottle laying around.

I suppose he could try and exchange it, if he really wanted to.

Yeah he could try and exchange it.i still wouldn't use it even if it was for free.