whats the best automotive oil additive?

Answer 1

Pick a good oil (castrol, pennzoil, any synthetic, havoline, shell) and the additive pack will be good enough you'll never need an additive. Some oils like supertech and vavoline have weak additive packs, but will still protect your engine nontheless.

The only time i'd consider using an additive is if I were burning oil, then i'd try a bottle of vavoline max life oil additive.

Answer 2

After 40 years in the biz, this is still my pet peeve!
There is no best additive. Period.
Change your oil according to the recommendation of your car's manufacturer.
Additives rarely do any good, and many can mess up your engine big time!
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Beware of "Slick 50" it has been banned in some states and no car company recommends using it. "Slick", like some other brands, contains silicone and Teflon, which can clog up your oil filter and makes things worse. Additives containing graphite are also as bad as slick because it coats the inside of your engine and clogs the small oil galleys and passageways.
Coating the inside of your engine block doesn't lubricate anything, and in fact decreases the blocks ability to conduct heat away from the moving parts.
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Modern car engines have "zero tolerance" parts. This means there is no slop in the moving parts like bearings and rings. If your oil is too thick, these close fitting parts don't get lubricated properly. For this reason, STP is no longer recommended in modern car engines.
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Race cars use special additives, but then the owners tear the engines down between races. They don't drive their cars back and forth to work like you do, which is really hard on an engine.
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So...
Stick with a good grade of oil, of the proper viscosity and change your oil and filter at least twice a year.

Answer 3

If you change the oil and filter on a regular basis with a quality oil and filter....you shouldn't need an additive.... remember most additives usually hide a developing issue....
On older cars I have found that Quaker State long life oil with the Slick 50 additive has added some life to my old truck....but then again it has 350,000 miles on it.... hope this helps

Answer 4

I always ran GM''s Engine Oil Supplement in my older cars and was very impressed with a test of it I saw demonstrated at our dealership. An engineer/salesman was in one day to sell his oil supplement product to us and had a test machine that is used by engineers to determine oil lubrication qualities. It used a motor to turn a spindle and had a weighted arm contacting the spindle in an oil bath arrangement which simulated metal on metal wear in your engine. He turned it on and placed regular oil in the cup where the spindle and arm met and it locked up in a few seconds, then he tried STP and it locked up again but took longer, then he tried out EOS and it took several minutes for it to lock up....he was astounded and said even his product never went that long----we never did buy his product but the demonstration really stuck on me. I've never used anything else since then. STP and Slick 50 are basically 50 weight oil and Slick50 has graphite in it which will plug up your oil filter especially in winter.
Most supplements do only cover up a bad condition for a short time...no substitute for regular oil changes. Most engine wear occurs at startup so make sure to use a good quality oil.

Answer 5

If you change your oil on a regular schedule, you won't need one. If you have a car that has a lot of sludge, and you want to clean it out,then MARVEL MYSTRY OIL is very good.I rebuilt a lot of engines,and this stuff cleans grime and sludge.After putting it in your oil, you will have to drain it.read the instructions and have a clean oil filter and fresh oil on hand.If you simply want something slicker without cleaning agents,slick 50,or dura lube is good.

Answer 6

Slick 50

Answer 7

1/4 million miles and running strong chevy truck --PRO LONG

Answer 8

Lucas or if you can find a bg distributor, get rf7. bgfindashop.com