The purpose of an assembly lube is to provide startup protection for tight tolerance engine parts.
With the Lucas HD oil stabilizer I can go up to 7000 miles without adding any more oil
I drive a 2014 Toyota Tundra with 175000 miles on it. I use the full synthetic oil and change it around every 6000 miles. Around 3000 miles or so I need to add a quart of oil. With the Lucas HD oil stabilizer I can go up to 7000 miles without adding any more oil. I have also use your power steering fluid and transmission additive with unbelievable success. That’s another story! -Harry C., Lima, OH