PETRONAS HTO Series are high performance heat transfer fluids specially developed for open and enclosed heat transfer systems operating at high bulk oil temperatures. Formulated with high quality selected mineral base oils enhanced with advanced anti-oxidant and detergent additives, PETRONAS HTO fluids provide high anti-oxidant protection and detergency to eliminate build-up and deposits. PETRONAS HTO Series fluids are recommended for use in: open and enclosed circulated heat transfer systems, petroleum product processing, rubber, textile and plastics industries and Solar energy heat transfer and storage.