HP Green Engine Oil LL 20W-50 is a high-performance, long drain CNG engine oil formulated to deliver exceptional protection and performance under the demanding conditions of Compressed Natural Gas (CNG) powered vehicles. The oil is designed with high-quality base stocks and a balanced additive system that ensures superior thermal stability, oxidation resistance, and deposit control, even under extended service intervals. This long drain formulation minimizes the buildup of harmful combustion by-products such as nitration and oxidation deposits, ensuring smoother engine operation and reduced wear over time. The oil’s excellent anti-wear and anti-corrosion properties extend the life of critical components, including pistons, rings, and valve seats — common areas of stress in CNG engines that operate at higher combustion temperatures. It also provides outstanding film strength that ensures reliable lubrication across a wide temperature range, reducing metal-to-metal contact and friction-related losses.
