Just wanna know is it normal for the oil to turn grey on my LT250 quadracer after each ride?

How do you flush the motor out?

Real men dont waste hormones growing hair!

 

are you riding in the water it sounds like water contamination or your racer is running REALLY HOT but i think if it were hot enough to break down the oil it would have blown by now

 

I had that problem when the previous owner ran regular car motor oil. You should use a gear lube!!!!! Like 75-85w. I use Full synthetic, and the oil looks like oil after a season of riding.

 

Sounds like water to me to. When you drain and refil note the EXACT position of the oil on the dipstick and/or glass. If it's higher after you ride/wash then your getting some water in there(somehow?). Make sure your clutches are set correctly(shiny specks). They are usually the first to show the wear since they have the most friction.

Gear oil in a quad? Pretty sure my owners maunal says 30w(or 10w-40) motor oil. At least that I've been using. I'll have to doublecheck tonight.

Good Luck,
Rob

 

The manual says 10w30 10w40 because of the different climates that thier products are used in. If you are in a warm area, 75w80 is the best to use in a 2stroke tranny. If you are riding in the cold a lighter oil is better. As for it looking milky. If the oil is whitish (milky) it's probably water, most likely a waterpump seal, possible head or base gasket (a leak down test will tell you). If the oil is grey, it is because your clutch discs are aluminum and they wear and cause the oil to turn grey. If you switch to steel plates the oil should look good as new when you drain it.

 

I only use a synthetic 80w gear oil for my baby. That 10w30 that is suggested in the book is not that good of a oil. Would you run motor oil in the tranmission of your car???

Didn't think so, so why in the trannny of a high-revvin' quad?
I suggest sticking to a full synthetic gear oil, I Race mine at the track alot, and the plates show almost no sign of wear. The oil comes out clean, no metal.

 

No it isn't. Check the water level in your radiator first. Then look everywhere else. Mine kept leaking water past my water pump seal into the cases. Cost me some crank bearings before I finally stopped it. That water pump design totally stinks.

 

DK,

Hmmm, I've never thought if it that way. I'm going to assume you are talking about a standard transmission. There is quite a difference between motor oil and transmission fluid. TM fluid is a lighter weight high detergent and is actually more like a hydraulic fluid(which it really is).

But you're correct in standard transmissions running gear oil. The only reasons I can think of a quad not using it is 1) the clutches, you have synchronizers in a standard tranny that are quite different from a quad clutch and 2) oil pump/pressure. I have no idea what the pressure an oil pump of a quad has. Gear oil would be a lot tougher to pump than a lighter motor oil. The friction produced by racing would thin the gear oil quickly.

Interesting question. Do you have any other research on why or why not use gear oil?

Thanks,
Rob

 

urnotroscoe, you mentioned making a leak down test. Is that a compression test, coolant pressure test, or a pressure test of the internals of the motor to see if there are any leaks or bypass?