Does this stuff have zinc as a major additive?
It is from JB Engine products, called "JB Engine Tune-Up" additive:
ENGINE TUNE-UP / new package!
Part No. ETU/4
Add to motor oil to free sticky valves and lifters
Protects new engines during break-in
Helps engines run cooler, smoother and quieter
Protects engines from harmful acids and corrosion
Treats the Metal, Not the Oil®
Contains JB Metal Conditioner®
It is from JB Engine products, called "JB Engine Tune-Up" additive:
ENGINE TUNE-UP / new package!
Part No. ETU/4
Add to motor oil to free sticky valves and lifters
Protects new engines during break-in
Helps engines run cooler, smoother and quieter
Protects engines from harmful acids and corrosion
Treats the Metal, Not the Oil®
Contains JB Metal Conditioner®