Slick 50
1. Plug up lifters, causing valve lifter tick.
2. Break down and form acid, not a good thing for metals in your engine.
Any frictional benefits will be offset by the above two negatives. Avoid it.
That said:
What's wrong with your '79 that you were considering using an oil additive? Maybe we can help fix the actual problem, rather than try and cover it up with a band-aid. At the very least, we can suggest far more effective temporary solutions than Slick 50.
BUT I have learned that it probably didn't do any good either. Don't waste your money. Save it and fix the real problem.
I also put a lot of RESTORE in an older motorcycle engine. I think that's what it was called. It was supposed to fill in the scratches in the cylinder and make things smooth and brand new again. Don't use that either! It never did a thing for that bike.
But that was when I was new to cars and bike and believed the TV and ads. Then my dad and I rebuilt the bike engine and I started to learn how things really work.
There was a research project done by Briggs and Stratton where SLick 50 engines failed sooner than just plain oil engines when run with a dry crankcase.
Dupont, the maker of teflon tried several years back to legally prevent use of teflon in oil since it didin't belong there in their opinion. The courts prevented them form legally stopping it, but I would probably take the advice of a company that stands to make money if you did use their product, when they tell you not to use it.
I have used Slick 50 in several engines over the years. I keep pretty good log books and never noticed any advantages to using Slick 50. With the negative scientific test results versus hearsay, I am no longer using it.
If you look at the advertising, you will not find a real reputable testing lab backing up their claims. All you will get is hearsay from Joe Blow who got 20 more miles per gallon on his clapped out engine. Hearsay is great but in general, the conditions are not controlled so the results are probably luck at best and probably wrong or due to other changes in almost all cases. I have seen variations in some cars I have owned that surprised me but there were no engine or oil changes or anything else I did to explain the mileage difference.
The only additives of use are thickeners and they are only for engines that really need a rebuild but are bandaided to keep from burning oil.
Go with good plain oil. The oil and engine manufactures spend millions of dollars and drive millions of miles to improve and prove their products. You want to pour in some product from a company that doesn't have the testing labs and money to do a thorough test? Not in my engines anymore.
Just my opinion,
Jim Henderson
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Best to just use pure fresh quality oil and leave the additives up to the maker. Afterall who knows better than them what is in their oil and what should be in it? Other than apparently Quaker State and I think Pennzoil. I think Pennz owns Slick 50 now don't they? and I know they own Quaker.
Jim Henderson
Ford Trucks for Ford Truck Enthusiasts
Matt
p.s. if your manifolds are glowing red for more than 5 min you know ur a little warm...
Jim Henderson
"On On October 1, 2002, the acquisition of Pennzoil-Quaker State Company by Shell Oil Company, an affiliate of the Royal Dutch/Shell Group of Companies, was completed. In May of 2003, Pennzoil-Quaker State Company began doing business as SOPUS Products. Combining Shell lubricant's networks and infrastructure and Pennzoil-Quaker State Company's leading motor oil brands, portfolio of car care brands and Jiffy Lube stores, the new company is a leader in the U.S. lubricants and car care business."
http://neptune.spacebears.com/cars/legal/index.html
I watched for years as my dad abused his vehicles, letting them go 6 - 7,000 miles between oils changes. He'd run out and buy packedges filled with Slick 50 and Dura Lube, "this is gonna fix the whole problem." Then about a year or two down the road the car is right in the junk yard.
- Chris
I bet you'll find that almost 70% of the products are related to Pennzoil/QS (label on the back of the can) in some way, shape, or form. This is especially true when it comes to fuel additives.







