Choice of additive
Bell Hammer Seven is a high-performance, general-purpose model suitable for all passenger cars, offering an excellent balance of quietness, anti-wear, and durability. It is ideal for high-mileage or long-term use.
Bell Hammer Light is designed for small and compact cars, with a slightly lower viscosity that prioritizes smooth revving and fuel efficiency.
Since your car has over 150,000 km and you wish to maintain reliability, Bell Hammer Seven is recommended for better wear protection and durability. Light is an option if you prefer lighter response, but Seven provides stronger engine protection.
Oil viscosity
0W-20 focuses on fuel economy, but switching to 0W-30 improves protection for high-mileage engines or in hot, high-load conditions. Bell Hammer Seven is compatible with both 0W-20 and 0W-30 oils.
Summary
・For long-term, reliable use: Bell Hammer Seven
・For lighter response: Bell Hammer Light
・Either can be used with 0W-20, but 0W-30 is better for added protection