Studies on the Effect of STP Additives on the Characteristic Performance of Farm Engines (I)

Abstract

The effects of STP additives were tested on six engines for farm use, in which STP was added 20% to oil and 0.5% to fuel respectively. The increase of shaft horse power of engines were 4.8% (at maximum) to 0.2% (at minimum). and mean value was about 2%. The cause of these power increaments were supposed that STP maintaines a betterseal between the engine cylinder and the piston rings in high compression engine at high speed.