Originally Posted By: tig1
Originally Posted By: BHopkins
Originally Posted By: Clevy
Originally Posted By: GutsyGecko
Redline all the way!
Yep. It's the best money can buy.
How so? Please help me understand.
You have to raise an eyebrow when some claim the best is this or the best is that. However I haven't used RL or Ams gear lube, but from my experience, M1 75-90 has been outstanding in the rear wheel drive vehicles I have owned.
That is why I asked. But if someone has some evidence to support these claims, I'd sure be interested.
Personally, I suspect that all three are fine products that would provide superior lubrication in most any daily application. (We are talking about a Subaru Forester here. Not a race car. Or a Cat D8.
Clearly, Mobil has an advantage in the research and development of being part of fortune 500 (they were #2 in 2012. Not sure for 2013.) company. That is something that neither Red Line or Amsoil has. In regards to R&D prowess, I have always wondered how Amsoil competes against the big boys. And in the current market of advanced lubrications, I think it would be foolish to ignore that.