i need to change the oil in my honda 300ex! what oil are you using and were are you getting it at! should i use the honda oil or auto oil? synthetic on non synthetic?
thanks

 

I use Honda atv oil. I run 10w40 in winter, and 20w50 in summer. I don't recommend running 20w50 in temperatures below freezing, unless you have your machine in a heated garage. The oil gets REAL thick and it will take a long time get to the top end of the engine.
You can run automotive oil, but with the oil also lubricating the tranny it will break down real fast. Synthetic tends to make the clutch more likely to slip, but you can run it if you have put in an extra clutch plate, or have heavy duty clutch springs.

 

Quote from Amsoil web page:
Some motorcycle and ATV transmissions and engines share an oil sump, so the engine oil also provides wear protection to the transmission gears. AMSOIL offers superior wear protection to transmission gears, which are often subject to high surface pressure and rotation speed. It also promotes proper wet clutch performance.

FRICTION MODIFIER FREE

AMSOIL Synthetic Motorcycle Oils contain no friction modifiers, making them ideal for motorcycle and ATV engines. The friction modifier free formulation of AMSOIL ensures dependable starting, smooth running, good fuel efficiency, desirable stall speeds and clutch compatibility.

http://belray.com/consumer/productpages/exr.html

http://amsoil.com/products/amv.htm

 

I use the Torco 10/40 and 20/50, no problems yet!!

 

Maxima 10W 40 all year round.

 

I use BelRay motorcycle racing oil

 

I run Pro Honda GN4 20w50 in my Recon. Pro Honda HP4 has moly in it, which can make the clutch slip!