Torco SR-1R is an ultra-premium 100% synthetic racing oil with a
selective blend of Group III, Group IV and Group V base oils and
proprietary additive systems aimed at increasing power, efficiency and
Torco SR-5R Synthetic Racing Oil was
developed under the most severe racing conditions and offers the highest
level of performance and protection for highly modified race engines.
SR-5R utilizes Group IV/V synthetic
base oil chemistries and additive technologies engineered to withstand