STP- use it in every small engine I rebuild, also put in a can at every oil change on the pickup and car. It really seems to extend the life of small engines-in my experience. Take care, Daryll in NW FLAjames dilley said:I just got to thinking ,what are your favorite oil additives?? I'll start. I use lucas products , I found that for a commercial engine it a great asset.
That "blender demo" is a typical sales gimmick.comfortablynumb said:there is a lucas controvery where someone put it in a blender and it turns to foam, and they claim it does that in your engine.
Ive never pulled out a foamy dipstick using lucas myself... I still use it.