Remember old school Kendal GT-1? Brad Penn Penn-Grade 1 SAE Nitro 70 Racing oil provides a mono-grade oil that is slightly less detergent formulation with a TBN of 8.0 and is highly effective for extremely stressed competitive engines. High viscosity, high-performance motor oil engineered for use in nitromethane or methanol fueled competition engines. The heavy viscosity and exceptional film strength provided by the Penn Grade™ base oils helps protect against cylinder ‘wash down’ and oil ‘thinning’ from fuel dilution typically encountered in these applications. Please call for availability. For shipping outside the continental 48 states, please call us at 815-472-2939 to place your order.