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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Mar 2008 Posts: 1,775 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 1,775 | I was at Home Depot the other day and they have Slick 50 on clearance. I've never used the stuff but I figure it's worth a shot since it's about the price of a quart of oil. Is it even worth messing with? | | | | | Joined: Feb 2004 Posts: 29,760 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,760 | The series of dyno tests I ran a few years ago showed a 5% net power LOSS after adding the slick 50 and doing a run-in according to the directions on the can. The engine was a nearly new Ford 300 cubic inch I-6, HP tested every 500 RPM from 1,500 to 4,500 RPM.
The next time I was involved with a slick 50 engine was a 3-liter Buick V-6 with 33,000 miles on it and a broken crankshaft. When the owner insisted on putting the stuff into the reman engine I installed, ("Ive run it since the car was new!") I voided his warranty!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Nasty stuff, I'd avoid it. I've seen it plug up oil filters, too.
Bill Burmeister
| | | | | Joined: Nov 2008 Posts: 8 New Guy | | New Guy Joined: Nov 2008 Posts: 8 | Well I actually received my first bottle a Slick 50 free and it seemed to make a difference , mileage did improve as I ran the numbers every tank full , It was my first brand new car I ever got and i was keeping fastidious records on every thing. Got hit by a truck and car was a complete loss. Have tried it in several vehicles since then and no difference in mileage observed. You will find as many people that swear by it as people that swear at it. | | | | | Joined: May 2007 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: May 2007 Posts: 95 | I tried that stuff once in a 1972 Chevrolet 350 engine.
Figured what could it hurt. Poor old tierd motor it was.
Well some how or other it hardend the rod bearings and it went to rod knocking.
Took a little while a couple of oil changes and i think some STP to get it to come ot of it.
Glad it is working for you. | | | | | Joined: Aug 2008 Posts: 138 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2008 Posts: 138 | It's simple. Teflon (the ingredient that makes Slick50 "work") is NOT designed or approved for use as a liquid lubricant additive. DuPont (who makes Teflon) does not approve it's use and even started refusing to sell Teflon to the makers of Slick50. Slick50 took them to court and sued them and the judge ruled that since DuPont was selling the Teflon as a bulk ingredient they had no say over what it could or could not be used for.
So, like it or not, DuPont says it's bad.... And they ought to know.
-Matt
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