My son was low on gas one day and grabbed 2.5 gallon plastic container holding a mixture of gasoline and oil for the chain saw. Shortly there after the car began running harder and harder back firing etc. until it wouldn’t run at all. Our mechanic said there was a leak in the block (I think) and w…

No, that is NOT possible…I dispose of two-stroke mix all the time by dumping it into my car and truck…A little “top oil” never hurt anything…

It may smoke and stutter a little bit, but it won’t cause a “leak in the block”. That can occur in very cold weather when your antifreeze is too weak, or you blow a head gasket, which may ppear to be a “leak in the block”. Your son must have done something else to the car or the cold weather and we…

I also dispose of my old 2 stroke oil in my car but I have never put 2 1/2 gal in an empty tank, I always do it on a mostly full one so I can’t say for sure.

If the catalytic converter was already marginally plugged the 2-stroke oil may have been enough to finish plugging it and causing a loss in power and possibly back firing. But a couple of gallons of 16 to 1 mix would not directly cause any mechanical damage.

High quality two-stroke oil uses ashless dispersants that leave no deposits or smoke…It burns very cleanly in a four-stroke engine…When diluted to 200 to one or more, it’s not an issue… In this case, if the tank was empty or near empty, one has to assume the first stop was a gas station, so again, …

How do you put the phrases “I think” and “need a new motor” in the same sentence? Get clear with your mechanic on his diagnosis and then get a second opinion.

I think the two-cycle engine mixture may have at worst fouled your plugs. The bottom line is that a little two-cycle engine oil in your gasoline in not going to ruin your engine.

I doubt very seriously there is a leak in the block and it would be interesting to know how your mechanic arrived at this conclusion. You might also clarify “shortly there after” because to some people that can easily means weeks or months.

Get a 2nd opinion. Mechanics are drama queens sometimes.

I just used gas oil mix in my truck that was on E. I drove it an hour and a half home. Then drove around for a good half an hour after I got into town. My gas gauge was a quarter inch below E. Now this is all on gas oil mix mind you. I put twenty bucks and regular gas in my truck the next day and my…

Will engine oil mixed with gasoline ruin a car motor?

Maintenance/Repairs

Nevada_545 June 23, 2019, 8:40pm 15

As long as the gasoline is added to the fuel tank and not the engine there should be no damage to the engine bearings.

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Will engine oil mixed with gasoline ruin a car motor?

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