Tip & How-To about Cadillac Eldorado

Duponts original Teflon Treatment

I read about people having problems with "Slick 50" and other products containing Teflon. I wouldn't touch slick 50 myself.
However, the original "Teflon Treatment" created by Dupont
WORKED WONDERS on many combustion engines.

I first learned about it when working as a petrol engineer for Exxon at the refinery in the San Francisco Bay Area in 1969.
I worked on what was called a "hydrocracker" That is part of processing crude oil at extremely high temperatures and full of grit. There were two high powered jet engine type turbines to move the material through the pipeline. Only one was used at a time because they had to have their bearings exchanged every two weeks. One day the technician came by and said it was his last trip. I asked why and he said because the bearings are now coated with Teflon and will never need replacing again. I was "gobsmacked" and disbelieving. six months later I quit my job to return to University. I discovered that Dupont's Teflon was sold to an outfit that was advertising it as Teflon Treatment for combustion engines, manual gear boxes and transfer cases. I was sceptical, but followed the directions on a cheap can of it and poured it into my old lawn mower's oil tank per directions with the engine running. As I awaited the 30 minutes advised to keep it running so the Teflon was thoroughly dispersed and the unknown chemical that kept the Teflon in fluid form had fully evaporated leaving all metal surfaces coated. I noticed the engine reved up on its own and ran like new. The can said I would never have to change my oil or oil filter if I had changed the oil and filter first, which I had done. That lawn mower is working today and never had it's oil changed and using the same filter. I then started using it on many vehicles, school buses, charter buses, my 1973 Cadillac Eldorado Convertible, and others. I put over 300,000. miles on that Cadillac and it still runs great on less petrol and much more power and it hasn't had an oil change or new filer since 1982 when I inherited it. I recently checked the compression in the 501cc engine and found every one of the 8 cylinders had factory specks pressure in each one.
Unfortunately the product was no longer available. The people who make and sell Slick 50 had bought the patent.
Mixing straight Teflon into motor oil does not work well; that's why it gums up engines. The Teflon isn't in suspension (fluid form) as the original Teflon Treatment was, thus the gum. I know it won't work if poured into a cold engine and perhaps they have changed the formula to make it work better, but if you don't follow the directions on the container you won't get the results you are hoping for.
My Caddy will outrun anything on the highway and gets 4 miles per gallon more from the petrol. On a tour bus that used to only got 3 miles per gallon of gas, after the treatment it got 8 miles per gallon. The owner was thrilled and it is still in service some 30 years later; never having to be worked on. Never put Teflon treatment of any kind in an automatic shifting gear box. You'll have to buy a new one.
Jim Hart

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after the engine warms up. the oil pressure light comes on and the gage drops off . when i accelerate it returns to normal.


Sounds like the motor has a lot of miles on it. You can try switching to a higher grade of oil. Instead of 5W-30 use 20W-40 or even 20W-50. You may even try a single viscosity oil like straight 40W in the summer.. If you used Slick 50 or some other oil treatment like that. It will reduce the friction and reduce the oil pressure giving you these kind of readings also. I like Slick 50 but only in newer to medium mileage motors.
Good Luck.

Aug 30, 2012 | 1999 Ford F150 Regular Cab

1 Answer

Hello there, my name is Mike. Our 04 Sedona has 98000 mi and the transmission started to slip. The manual sugests transmission oil change at 105000 mi. When I do the oil change should I add just the transmission oil or also include like slick 50 or another transmission additive? Thanks


hi mike this is best just to add the normal transmission fluid, i am not putting slick 50 down i use it myself in engines, but although it has a additive for the transmission it will be like adding 2 different oils in the transmission , which it wont like, but after saying that ( ime sure some people will say what the heck lol ) slick 50 is a good preservative for moving parts, but really i personally do not use it in transmissions, just a hint as well if you did not know this already, when topping up the oil in the trans, make sure the vehicle is on idle when checking it....hope this sorta helps ya, but preference is down to you the customer

Jun 19, 2010 | 2004 Kia Sedona

1 Answer

oil additives


Duralube is Better than Slick 50 Hands Down. You should have no Problem Using this in your Car. Please Rate My Response! Thanks!

Feb 01, 2009 | 1992 Oldsmobile Cutlass Ciera

2 Answers

oil capacity only 3 qts any problem if i replace 1 qt with slick 50 or the like


nope not a problem...slick 50 has lubricating agents as well.....please rate me....

Feb 01, 2009 | 1992 Oldsmobile Cutlass Ciera

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