Back in the late 1970's Stalube offered a motor oil containing molybdenum sulfide which could be found in some of the high end auto-parts stores. It did not seem to be that popular with cheap gas. I used it and found it to increase mileage. Then one day it seemed to vanish and has never returned.
Recently I stumbled on to a molybdenum sulfide containing oil additive made in Germany at the local AutoZone store. LIQUIMOLY is the name of the product offering claims of decreased wear, less engine noise, cooler operating temperatures and better mileage, what is not to like? Found some good reviews on
Amazon for the anti-friction additive.
Bigger question is has anyone on this site tried it out in their vehicle and found it to deliver on the claims?
I bought a 300ML container and will be adding it to the crankcase with the next scheduled oil change sometime next week. Will be interesting to see how it works many decades later in a fuel injected turbo engine.