Caltima SHP lubricants are high-performance diesel engine oils for medium and high-speed trunk piston diesel engines with or without oil purifiers. They are blended with refined base oils and selected additives. Caltima SHP lubricants have very good viscosity control in severe high-temperature service, and their BN retention prevents corrosive wear over long periods. The detergent and dispersant system promotes piston cleanliness, liner lacquer control, and first-rate soot handling. This results in reduced “hot” (piston lands and grooves, piston undercrown, purifier preheaters) and “cold” (crankcase, cambox, rocker area, fuel pumps, purifier bowl) deposits. Caltima SHP lubricants provide high water tolerance and good water separation.