mfg Posted May 30, 2017 Report Share Posted May 30, 2017 Using STP WILL NOT provide the zinc & phosphorous protection needed for engines (such as Studebaker) with flat tappet cams.......True? Link to comment Share on other sites More sharing options...
studegary Posted May 31, 2017 Report Share Posted May 31, 2017 I assume that you mean STP Oil Treatment (there are many STP products). I will say true since STP Oil Treatment is mostly a viscosity improver. Link to comment Share on other sites More sharing options...
arkus Posted May 31, 2017 Report Share Posted May 31, 2017 there is one stp product that is loaded with flat tappet cam additives however the name escapes me here at home and the cans are at my shop. have been using it for years in my flathead ford engines. i bought several cases years ago; might not be available now. Link to comment Share on other sites More sharing options...
Avanti83 Posted May 31, 2017 Report Share Posted May 31, 2017 (edited) STP oil treatment does have zinc additives in the formulation, the only one I see that doesn't is smoke treatment. I'd guess the the oil treatment is the closest to the original based on level of viscosity improvers so based on this data. False Edited May 31, 2017 by Avanti83 Link to comment Share on other sites More sharing options...
mfg Posted May 31, 2017 Author Report Share Posted May 31, 2017 10 hours ago, Avanti83 said: STP oil treatment does have zinc additives in the formulation, the only one I see that doesn't is smoke treatment. I'd guess the the oil treatment is the closest to the original based on level of viscosity improvers so based on this data. False FALSE is the correct answer!....Although the STP folks will not give out 'amounts' information, they assure us that both zinc and phosphorous are included in their oil treatment! Link to comment Share on other sites More sharing options...
studegary Posted June 1, 2017 Report Share Posted June 1, 2017 2 hours ago, mfg said: FALSE is the correct answer!....Although the STP folks will not give out 'amounts' information, they assure us that both zinc and phosphorous are included in their oil treatment! I agree that STP Oil Treatment includes zinc and phosphorus, but I do not see how you can claim that it contains enough to justify your statement of "....provide...protection needed for engines..." Link to comment Share on other sites More sharing options...
mfg Posted June 1, 2017 Author Report Share Posted June 1, 2017 20 hours ago, studegary said: I agree that STP Oil Treatment includes zinc and phosphorus, but I do not see how you can claim that it contains enough to justify your statement of "....provide...protection needed for engines..." Just add a pint of STP to your engine oil!.....Andy G. wouldn't lie!! Link to comment Share on other sites More sharing options...
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