Re: Oil? What kind?
I have used all types of oils in my bikes over the years, and I have had no problem using an automotive motor oil in any of my bikes.
I currently am running an car oil (mobil 1 5w-30) in my 185s, my manual (hanes) recomends using a multi grade car type oil, ao i do. I use the synthetic because it does not break down like a conventional type oil under high temp conditions. This is a bike that is close to twenty years old without any internal engine work, and has two different clutches in it, always run on automotive oil. This is proof enough for me.
Oddly enough my official honda manual for my 250r suggests a multi grade car type oil as well. I did for a while but i now use the honda gear lube that is sold in the red bottle. When I tried this lube for the first time I could swear that I felt a little more power from the engine, this could just be me.
My ktm manual recomends a heavy weight gear oil, and to change it very often, it reccomends what ia accually a rear end differential fluid. I use the honda gear lube in that engine as well, since thats what i had the last few times i did the oil in it.
When I had my blaster, the yamaha shop manual recomended an automotive multi weight oil. I used 10-30 in it the entire time i had the bike without any problems.
If anyone has doubts they should ask their local dealer or consult their manual. As far as I can see - you can buy automotive oil and use it without problems, as long as you do maintain your bike. This means changing your oil when it gets dirty, befor you blow out your clutch. Remember anybody that is selling oil will hype up their oil over other's, this goes for motorcycle oil as well as car oil, so if you ask two people about the same oil they may tell you two totally different things.
You can even get oil without the additives if you are worried about them, I have found this type sold in discount type stores for x many a doller. I wouldnt run them in my crank case unless i was using them to flush something out.
There are some oils that you can not use for bikes with a wet clutch transmission set up, IT SAYS THIS ON THE BOTTLE, just look on a bottle of slick 50 gear oil the next time you are in wall mart to verify this.
Now I have seen people (on other web sights)swear that they use automotive transmission oil in their bikes, this kinda makes sence to me since trans fluid is pretty much further refined oil that has extra additives in it. I have not had the guts to try it out for myself yet.
Sory to be so long, but I hope i helped.
83 ATC 250r, 84 atc 250r (parting out), ATC 185s, 85 Ktm 350mxc