Hey I'm new to the forums and just recently picked up an 84 GSL, and was wondering if adding slick 50 to conventional oil would be a good or bad idea, the car has a lot of miles on it but im not sure how the rotary would act with slick 50 engine additive, thanks.

 

safe bet is add NOTHING to the oil in a rotary

Do some reading up on how the rotary works including OMP function. These cars take crank case oil and inject it into combustion chamber. Alot of guys run premix. Something to be aware of is whether or not you have an OMP and if it is in fact functioning. Failure to lube the internals with the injected oil = toast engine

 

Mazda added Teflon to the rotor housings with the TII engines to protect during break-in,but I wouldnt put any kind of additives into a rotaries oil.PTFE solids in the bearings and galleries isnt the same thing as a coating of it on the rotor housing surfaces which gets scraped off and spat out the exhaust.

Besides the oil injection/oil burn-off characteristics that are specific to rotaries,I wouldnt put Slick50,Prolong or any kind of that stuff into any engine.I dont care who pushes or endorses it,it aint going into my car, or any car I work on.

 

No....

 

You have to wonder, if adding PTFE to all those oils really did make them run better, why don't oil companies just do it themselves?

I'd be extraordinarily nervous about running an oil additive with PTFE in my engine, since it probably won't combust correctly, which means bits of it get between the seals and the housings, which means they grind down and I lose compression.

Wouldn't touch that stuff with a 49-1/2' pole for my cars, might try it in a performance lawnmower.

 

About twenty years back my dad had an SA. I was trying to be helpful, and added Slick50 to it. Smoked like a bitch afterward and never stopped.

 

I used slick 50 when it first came out, didn't see a nat's *** difference.

The particles in slip 50 are supposed to filling the voids or roughness.

I think it is a marketing gimmick. That line "oil is not protecting the engine at start up" is bullshit!! I've taken apart engines that haven't moved for 20 years and an oil film was still on the rods, valves , cams, and timing chain.