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Mixing synthetic oil with regular (conventional) oil generally won't harm an engine, as both types are compatible. However, it can dilute the benefits of synthetic oil, such as improved lubrication and performance. Over time, this mixture may lead to reduced engine protection and efficiency. It's best to stick with one type of oil for optimal performance and protection.
What else can I help you with?
Can you run bio diesel mixed with regular diesel and not hurt your engine?
YES
Will it hurt the engine changing the oil from synthetic to conventional?
No it is fine to switch back to regular oil.
What type of oil is recommended for 2004 jeep 4.7 liter and if synthetic or regular oil?
Regular oil is recommended by Jeep. Edit: Correct, Jeep does not make a recomendation to use synthetic oil. However synthetic oil will not hurt the engine at all. The recommended weight is 5w30.
Will it hurt your engine to put synthetic in a 2004 trailblazer if it didn't have it before?
You can use Synthetic oil at any time. You can even mix it with regular oil. Just be sure and use the correct weight.
Can it hurt your engine if they put synthetic oil in it?
I use synthetic oil in my 2002 PT Cruiser, and it runs great! Synthetic costs a little more, but it actually better for your engine.
Would Mobile 1 Synthetic Motor Oil 10W-30 hurt your Ford 2004 Expedition 5.4 Liter engine?
No. It won't hurt your truck...
Will Rubbing Alcohol cause damage to your car engine?
A small amount of rubbing alcohol mixed with gas should not hurt your cars engine. The alcohol will burn with no problems.
Will synthetic oil hurt your engine on 97 Yamaha xt 350?
A good grade synthetic oil can be used in a 97 Yamaha XT350. 10-40 should be used instead of 20-50 as the thicker oil does not pump up well cold.
Will leaded fuel in an unleaded car hurt the engine?
It won't hurt the engine but it will hurt the catalytic converter.
Does it hurt an engine to run it with no exhaust muffler?
It does not hurt an engine to run it with no exhaust muffler
Will it hurt a gasoline engine to be topped off with 15w-40?
You should always use the same oil when topping off. Some different WT oils react and cause solids to form when mixed and will damage the engine.
You put regular unleaded in your S2000 by accident will it hurt the engine It was 87 octane?
No, it won't hurt your engine. There are computers now that can predict when to fire a spark plug to reduce ping. It is not a good thing though, you will get worse gas mileage and cause greater emmisions. Better to put high octane in there.
