anyone good experience with those oil additives like slick50 , stp  wynn's etc?

i was looking on the net to see if it might be usefull to add an additive but although i already had my doubts this article makes me think more than ever i better save my $$$ 

http://www.xs4all.nl/~chris/slick50.html

art-corvette

 unless you have a very high mileage engine save your money,,if your engine has over 100k on it some of these will help boost compression, rd

Good thing I was at work when I read this, otherwise I wouldn't have had the time to read the whole thing  So I guess good old (new) oil is the way to go.

I've never used Slick 50, but have used STP for years. I guess when I was a kid in the '60s it was the thing to do and I've never dropped the habit. I've never forgotten the TV ad of Andy Granatelli not being able to hold on to the screwdriver dipped in STP. That did make an impression. A friend who rebuilt motors used it during the rebuild process since it really clung to metal parts and didn't run off. I know all the studies that say additives aren't needed with modern oil blends. For some reason I still like adding STP to my car's oil.

A mechanic I knew many years ago swore by Wynn's Friction Proofing and my Dad swore by Marvel Mystery Oil. Everyone has their own experiences and preferences.

You pays yer money and takes yer chances!

I'm with Gunslinger- I still have STP decals from the late 60's

even a jacket - I have used it for years as well as Marvel Mystery Oil (different cars and tractors). Great for assembly

Old habits dye hard - I still like STP - maybe  a link to my teenhood

Big Al

I use Stp when assembling the engine componets because it is thick and gives agood inital coat. I want something in that spot at 1st start up.
I found the atricle funny since one of the 1st places I stuck slick 50 was in my 5hp briggs engine. It is wore out and rus hotter than all get out. (it's on my rotor-tiller. Maybe it was all in my mind but swear it runs cooler and smokes less under pressure.
To this day I still use it in small engines for this reason. I had read about the teflon and its negative aspects but then again these small engines take a beating and have no filters.

   Being a commercial turf equipment technician, I run into a lot of people who swear by additives. I am not a fan. I think they just cover up a bigger problem and lure people into a false sense of security. I have used STP beore but only to quiet down a noisy diff or manual tranny to pawn off the car on to somebody else. I've had good results with Marvels. It's great for top end lube. Never used Wynn's. As far as Slick 50, the only thing i can say is, it's the only additive that is certified by the FAA for use in aircraft. Believe me that say a lot. They are the most restrictive people in the world. STP is a good idea on rebuilds if you don't shelf the engine for any length of time. I prefer to use assemble grease because it doesn't gravity off over time. Had motors of the shelf for up to 2 years and the still were lubed for start ups. Not sure that would work with STP. If you use additives, and that's entirelly up to you, just remember to do the regular maintenance-oil changes and filters, etc-and it shouln't be a problem. Just an opinion.  Jim

Most oil additives are nothing but a bandaid.  In a good engine, they don't help.  In a worn engine they can do some good.

Slick 50 is a metal treatment, not an oil additive.  It gets added once every 50,000 miles, not every oil change.  And it does work.  Early versions had some problems with teflon suspension, but Slick 50 cured that.   Without creating a long list, I can tell you from much testing, that it does work.

Ken, I know you're a fan of Slick 50 from past post. Did you read the article about Slick 50, etc., in Art-Corvette's post? If so, what's your opinion on what they had to say? They were pretty negative about PTFE.longhorn29438801.671875

I didn't read it.  I have read other likely similar articles. Depending on the carrier there can be a lot of negatives with PTFE.  If it's not held in suspension it can clog passage and create far more damage that many other things.  So I don't recommend it in just any brand or product.   The Slick 50 product has used other chemicals to prevent clogging, and still do it's job.  It's not one item, it's a combination of them.

My recommendation comes from a lot of personal experience, and personal testing.  This has involved over 10 years and at least 10 different vehicles.  5 of those vehicles had testing extended over 75,000 miles and sometimes more.   There are other incidential ones as well, which all followed the trend of the test vehicles.  (I have used it in several cars that I did not test as well.) These were family and friend, and long term customers cars that I worked on and tested.  I have not as of yet listed all of them.

But I do agree there are products with PTFE that I would NOT want to use in my cars.  One chemical or product does not fit all.  I have seen it cause damage, but not with Slick 50.   I still have a case of cans of PTFE in the basement someone gave me years ago.  It's an off brand and I can't bring myself to put it into anything. I don't trust it.

Real world results is where I put my statements and cash.

kstyer38801.6914814815