OK, thanks, now we're getting somewhere. I've never heard of "Warren". Do they make a good product? And have we all agreed that the USA Wally's "Full Synth" is likely a Group III oil? Any Group IV or V content? Decent additive package?
Thanks.
The reason I'm asking all this is last time I changed the Escort's oil I put in M1 (replacing dino oil from the local quickie lube joint) with an ST filter, and the car seems to be running great. No leaks, no burning, no smoke, and the insides, as viewed throught the oil fill hole, are very clean. I'm wondering if there may be a lower cost but still good solution.
I think the local lube joint used cheap-assed filters without an anti-drainback valve, because with their filter on, every time you started the engine after it had been sitting for a while, there was a lot of clatter for a couple seconds. Now with the ST filter and M1, no clatter at engine start. That's gotta be a good thing, no?