Viscosity of STP

Joined
Mar 21, 2005
Messages
2,688
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Elderly County, Florida
Howdy oily gang! Could somebody tell me the viscosity of STP or link me to a discussion of that topic? I read somewhere that Molekule did a thread on it but I can't find it - Thanks
 
Joined
Oct 22, 2003
Messages
13,132
Location
By Detroit
No time to look for links right now, but there was a good discussion of it in the Additives forum. I believe it was on the STP 4 cylinder treatment. IIRC the company reps have said 500cSt for the regular STP and 100 or 200 for the 4 cylinder stuff. There is a VOA on the 4 cylinder stuff at this site and it shows close to 100 cSt IIRC. You probably are better off with Valvoline Synpower Oil Treatment, though twice the cost (also a recent VOA on this site for it).
 
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