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limited info generic answer -unknown model -engine --well every type of fluid fluid is at the back of engine going with a full size 1 - coolant heater hoses..overflow tank.. 2 oil valve covers..main seal ..dip stick..oil filter--pan ---3 trans trans lines -pan-torque conv-dip stick--4 brakes master cylinder--lines-- determine what color then check around that component
there is a cooler for the trans fluid that runs threw the f the radiator the cooler splits and trans pressure being higher while running pushes into the coolant how ever as it cools down the coolant pressure can push the coolant into the trans so see if the trans fluid looks like a straw beery milk shake if so try and keep flushing the trans until the fluid is clean and fresh if the trans makes it threw the coolant then you will need to flush the cooling system i use pinesol it breaks down the oil
very possible you have a bad oil cooler, i wouldn't operate the vehicle until it is taken care of, the cooling system will have to be completely cleaned out.
Is this a CRF450 single-cylinder off-road bike? If so:
If it's coming out an overflow, it may be overfull. Not sure on that--haven't seen it before.
To check engine/trans, drain, refill with (670cc w/o filter change; 690cc with filter change), start engine, shut off engine, check sight glass on side of engine. If it's low, add oil and repeat start/shutoff/sight glass routine until it's full. Engine and trans share oil.
If it's still pumping oil out the overflow after you're sure it has the correct amount in it, be sure it's oil and not coolant, battery acid, or gasoline (there is a gas overflow tube on the carb for when the float sticks).
Make sure your transmission fluid is not milky. Your trans fluid cooler is located inside of the radiator. If it splits or leaks you will get trans fluid in the coolant and coolant in the trans. This is not good for your transmission and it will not last long at all.
this oil is usually from the trans cooler in the rad that helps keep the trans fluid at operating temperature by the engine coolant absorbing the heat from the trans fluid .the cooler is a steel tubing in the rad tanks that the engine coolant runs around and absorbs the heat.when the cooler rusts through the trans oil seeps into the coolant.if it was motor oil it could be caused by a head gasket were the oil passage is next to the coolant passage in the gasket and it seeps into the coolant passage.however the coolant pressure is alot higher than the oil pressure and the coolant usually enters the crankcase.
you need drain fuel tank.fuel tank probably need to be removed and cleaned out to remove all sediment in bottom of fuel tank.remove each sparks and label them.squirt some clean engine oil down the spark holes into cylinder bores to help lubricate cylinder walls and help seal the piston rings to build up compression.replace fuel filter.best to change spark plugs and wires.check all brake hoses they more likely old cracked. i would change brake fluid bleed out all the old brake fluid out of the brake system.also change power steering fluid and change transmission fluid and filter also change engine oil and oil filter.replace the antifreeze and all the coolant hoses and radiator hose.replace thermostat and radiator pressure cap.replace battery and add new full tank of gas.you should be ready go. check ignition timing also.
that means trans fluid or engine oil is getting into cooant system. Not good. Either a leaky trans cooler in the radiator or a blown head gasket. Hope it's the trans cooler
I'm not sure what vehicle we are speaking of, but it is most likely not oil in the radiator. It is transmission fluid. Your radiator has two separate areas designed to cool the engine coolant and also the trans fluid. What most likely happened is these two areas developed a crack, and is allowing the trans fluid to enter the radiator. Replacing the radiator will correct this issue. In most cases, your trans fluid will also be contaminated with engine coolant, and the trans fluid will also have to be drained and flushed.
Great Ideal !! Most can be done at a oil change place !! Also I would use a good high milage vehicle oil!! I'm a mechanic of 30 years and this is what i use in my older FORD van!!swampratt200 !! aaeee!!!
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