Hi.

1) What fuel should I use in my 1978 DT175? The easy choises would be 87,89, or 91 octane. Which is advised?

2) I need to order an air cleaner element for the same bike. I can find K&N's that'll fit, or a NOS / original.

3) I figure if I go K&N I'll use their filter oil & cleaner products, but if I get an original - do I just oil it with 30w oil and put a little axle grease on the sealing edge, or is there some better way to do it these days? (use K&N cleaner and filter oil on an original type?)

I appreciate any and all input. Thansk.

Matt

I would go for an OEM one they're very good. And coat it liberally with the thickest oil you have...then squeeze out the excess (as in dont wring)