What is better for plants synthetic or regular motor oil?

How effective is synthetic blend motor oil in comparison to reg oil?

Synthetic oil or a blend of Synthetic and regular oil is much better for your vehicle than regular oil alone. Synthetic oil is MUCH more expenshive. If you change your regular oil every 3 months or 3,000 miles I will be fine.

Is it alright to mix synthetic motor oil with regular non-synthetic motor oil in car engines?

That's okay.

Is it harmful to switch between regular motor oil and synthetic motor oil?

No, you can even mix synthetic with conventional oil. It will do no harm at all.

Can you use synthetic oil in a 1988 dodge dynasty?

Yes but once you do there is no turning back and no mixing regular motor oil ever again with the synthetic oil....only straight synthetic....or use semi synthetic....now that can be mixed with regular motor oil in a pinch.

What motor oil is best regular or synthetic?

The best motor oil for you car depends on the car. Many old cars can only handle regular motor oil.

What kind of oil goes in a 1997 1340cc harley dyna wide?

All regular harley's take 20w50 motor oil, regular or synthetic is your choice.

Why use synthetic oil in your car?

Good question. I personally do not use synthetic in my car. I do however use it in my air cooled lawn mower. A 2-year motor oil test done on 75 New York taxi cabs in 1996 showed no significant nor any discernable differences whatsoever between using a quality regular motor oil versus synthetic motor oil in terms of performance, sludge buildup, and wear and tear. It's an equal tie or in other words it looks to be more of a matter of financial capabilities whether a motorist can afford the overly expensive price of synthetic oil mostly for the peace of mind since apparently synthetic oil is practically no better and no worse than regular motor oil with additives. Synthetic or semi-synthetic motor oil does offer longer time periods between oil changes compared to using regular motor oil especially for drivers who might be prone to ignoring their periodic maintenance oil changes. For most motorists but not for all, although synthetic motor oil is better than regular motor oil it's probably not likely worth the overly expensive price tag unless you're into high performance racing or live in very extreme climate temperatures otherwise everything else about full-synthetic motor oil sounds to be pure hype and perhaps possibly the placebo effect or else we would've expected any noticeable degree and/or some kind of significant difference of sludge buildup and/or wear and tear in at least one engine out of the 75 city cabs from a 2-year motor oil test instead of absolute zero difference, wouldn't we? IMHO, it is not necessary for the average car. That being said, if the manufacture of you car recommends synthetic then by all means use it.

What grade motor oil for 2001 Chevrolet impala?

5w-30 is recommended and you can use either regular oil or synthetic.

Can you mix a small portion of synthetic trans fluid in your regular motor oil?

Absolutely not. Ignore anyone who tells you different.

What happenens if I mix regular oil with synthetic oil?

Nothing happens, they just mix. You can buy "blended" motor oil.

Can you add regular motor oil to syntheitic oil?

No. It will ruin an engine. The above answer is 100% wrong. You can mix convention oil with synthetic and it will do no harm at all. When you see them selling Synthetic blend that is what you are buying. A blend of synthetic and conventional oil.

What kind of oil goes in a 2002 Harley Sportster 883?

20/50 SYNTHETIC OR REGULAR MOTOR OIL............ CHUCK MC