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It could cause engine damage. We had somebody put 10W40 4 stroke oil in the injection oil tank of a 2 stroke sea doo pwc and it ran for less than an hour before there was significant engine damage. He is now forever known as Captain 10W40.
Two-stroke oil is the same stuff whether it says "snowmobile," "outboard" or "weed whacker" on the bottle. As long as the mix ratio is right, you can put the same oil in your snowmobile and your boat.
You generally don't "change" the oil in a lawn mower engine, you just periodically put more in. The lubrication system on small two-stroke engines doesn't recirculate oil, it mixes it with the fuel and uses it up.
Almost all lawn mowers are 4 stroke engines that use regular gasoline (no additives except maybe some StaBil when you store it for winter) and ordinary motor oil, the same used in cars in the crankcase. Usually you would put 10W30 or 10W40 in their crankcases. Briggs and Stratton engines are on most lawn mowers, though Tecumseh is also common. Some have Honda small engines. I suppose two stroke lawn mowers exist but they are the vast minority. You do not add 2-stroke oil to the gas like a chain saw or weed eater. If the mower does happen to be a 2-stroke, I'm certain it would be plainly labeled, probably on the gas cap.
4 stroke oil
where do you put the oil at for a john deere 317 riding lawn mower and what brand of oil
No you can not.
Four stroke engines such as lawn mowers etc need only straight fuel. Either leaded or unleaded (depending on age and availability). no oil or other mixing is required
if your scooter has a engine oil dip stick then it is a four stroke. if it has a oil tank that you have to put oil in then it is 2 stroke.
There is no "gas oil ratio", the 3.5 hp Briggs and Stratton engine is a four-stroke design, oil should NOT be put into the fuel!!!
Drain it out and replace with proper oil
Drain the kerosene out and depending where the kerosene was put :If in the flue tank refill with gas :If in the oil reservoir refill with sea 30 w oil :If two stroke motor mix 2 cycle oil with flue and refill tank. Hope this helps.