What the heck is that stuff?
Guy @ auto parts store was really pushing it hard. The bottle makes numerous claims (e.g. "pure petroleum," "keep that engine alive," "Increa. Compression," etc)
Lucas... is a straight 80-weight Group 1 "oil." It is thick as [censored]. It SAYS it has those benefits.. Now, I have put it in engines that people believe like thicker oil (there are some that do) and it SEEMS to help.. it is basically an oil thickener, and it is supposed to fill in things in cylinders, etc. and "stick" to things, like a Group V (5) oil would.
Many say it does more harm than good.. However, when I added it to engines, I *think* it made it run smoother..
It is not until you get very, very in depth to motor oil application that you begin to question what, if any, "benefit" it has.
In an older, worn, beat-up engine, it thickens the oil, and therefore makes it run better.
If added to older oil, (perhaps sheared?) - It thickens it back up.
Whether or not thicker oil is better, is the issue.
And the sales guy was tasked with seeing if he could "move" some of it.. I actually avoid parts stores now.. I got sick of the LIES. And the pressure. (I come in to look, browse, and buy what I need, if it is good and priced right. 9 times out of 10, it isn't.. so, I shop online.)