From what I have read it really doesn't hurt to mix synthetic and conventional oil either since most all synthetic is a blend anyway. I believe it is a lot of manufacturer driven hype. That being said I use Polaris oil in mine only because the dealer is 2 miles away.SpiritNugent said:You can use Synthetic or regular... just drain out completely... like a few days. Don't have that much time? Buy 2 quantities of oil you plan to use, fill it, drain it after a quick ride, then fill it again (to get all old regular or synthetic out- if you plan to switch of course)
Me, I take the cheap route. I go to work all week, I let the drain plug sit on the workbench with the pan underneath (if I plan on using a different oil or switch from synthetic to regular, or vice versa)
I would recommend synthetic oil for any quad...
4 stroke motor oil, Bel Ray and Maxima.
2 strokes, Bel Ray tranny fluid.
2 strokes use tranny fluid instead of motor oil. I use Bel Ray Gear Saver tranny fluid in it. But towards the end of last summer, I was using ATF Type F Automatic tranny fluid for cars. $3 a quart, and it takes 2. I change it every weekend due to it being a lighter weight, but the thing shifts like butter and the clutch works flawlessly.devonb said:Hey spirit, you ever use synthetic oil in your Banshee? I was always told and read that synthetics don't react kindly to a wet clutch.
Oh, and BTW I don't know that Mobil 1 is better than Ams oil (I wouldn't think though) it's just that I could get it at Wallyworld and a lot of other people had run it in their Polaris with good luck. Personally I believe (and I don't think anybody would disagree) that it is WAY more important checking your oil and changing it a little more often than the brand you use.
Motor oil, car tranny fluid, or "motorcycle transmission fluid" can be used safely in 2 strokes. All the bikes you had listed were except the YZF426. That NEEDED motor oil. No options there. Just owners preference with 2 strokes. Your manuals told you motor oil... for you banshee, for your YZ, for your CR, etc.devonb said:Huh, I've raced for 10 years and never used tranny fluid in ANY of my bikes. I had a banshee for about 6 years and always used 10-30 in the clutch. I started racing bikes on a 92 YZ250 then a 93 CR250, a 96' YZ250, a 99' YZF400 and I ended my racing days on a 00' YZF426 and never used tranny fluid. Maybe we aren't on the same page here but banshee's don't need tranny fluid for the clutch.