Is HMX® different from your API-licensed engine oils?

Is a special oil filter required when using Royal Purple?
August 17, 2018
Why should I use a high mileage oil
August 17, 2018

Is HMX® different from your API-licensed engine oils?

Yes, HMX is fortified with Royal Purple’s proprietary Synerlec additive technology as well as additional seal conditioners beneficial to higher mileage engines to maintain elasticity of gaskets and seals. HMX is also formulated with a slightly higher amount of anti-wear additive to provide more wear protection for older engines.