Castrol THF is over priced at Canadian Tired. I bought a pail at Princess Auto on sale for $30 cheaper and I had a $25 store coupon to use up. I don’t care about brand or base oil composition as long as it meets the licensing and manufactures approval I’m looking for. In this case, J20C.
Instead of ATF, I use THF in power steering pumps and transfer cases in addition to the lawn tractors.
Nothing wrong with that. The first oil I ever purchased with my own money was Castrol GTX.
It was API SG back then, and it's API SP now, so I still buy it on occasion.
Not for me. I like cheap oil but stash with clearance / rebate / pricing mistake oils. I have spent my life in manufacturing and economy of scale wins. So there is no way someone like Warren Distribution can compete with Exxon, Shell, BP, etc who refine their own oil and in some cases make there own add pack. So there either using cheaper ingredients or living on lower margins, neither being great.
Now does that mean that Supertech or Costco oils are not good enough - absolutely not, there fine. If they put them on clearance I would buy!