Funny, when I replied to this post back in April, I was with M-1 for the ten-count. Now, after $2-$2.50/Quart price increases for M1 SuperSyn standard, they've beaten my lifetime of loyalty to the brand clean out of me.
Funny thing, you guys find all kinds of deals on dino, Pennzoil Syn, Castrol Syn, closeouts, rebates, but never, NEVER a break from the norm on M-1. Ever. Plus, in this area, you rarely see the gallons except at WalMart, and here anyway, they're the same price per Qt. as single bottles. Pep Boys pricing this week in the DC area was $6.99 for SuperSyn, and EP was $7.99/qt. As recently as April of this year, I paid $4.50 for the SuperSyn per quart.
So, between all of the above, and the evidence and writings by folks in the know here, and a bunch of reading on the subject, I finally reach the conclusion that from SL-graded oil on, it really doesn't matter anymore. Dino, Syn, the "lubricity" is the same. The only difference affecting the average car (mine)is the OCI. Long OCI (5-10K) with any kind of "real" Group IV or Group V syn, or, short OCI (3-5K) with a decent Dino. Is my revelation a correct read? If my conclusions are wrong, I'm all ears..
It's somewhat liberating, I can now pursue a good score such as the Home Depot closeout, etc., etc. For about $45.00 (including the down network score at Home Depot a couple of weeks ago where they let us walk out with a cartfull of free PP and high mileage Pennzoil), I've built, in about a week, a stash of around 70 quarts of premium oil, 40 quarts of it PP, and Pennzoil SL syn. Not to mention another 20 5W20 SM Pennzoil Yellow Bottles for .87/qt. So I'm stocked for the life of the vehicle for 10% of what I would have spent on M-1.
So much for loyalty to the brand. I wonder if I'm in a great minority regarding former M-1 customers. I know they have a powerful brand, and a great product, but you wonder if it's taking a ding lately owing to these increases?