...from myoilshop.com, for $7*/qt. plus $7.80 shipping per 12qt. case. (I'm old enough to have seen engineoil come in 24-quart cases.) Thx for the lead, buster. RL sent me a spec sheet in PDF format that contains all the RL street oils; e-mail me if you'd like it. JIC anyone cares, I've pretty much decided to use this RL 5W-40 in my Porsche Cayenne Turbo instead of the M1 0W-40 I already have, after the OC (oil change, for us newbies) at about 10,000 miles, which should happen in a few days. * RL's recommended retail is $7.75.