I was hoping to try this in my 1997 LX450 (Land Cruiser with inline 6)but my Wal-Mart only seems to carry the 10w-30 and the 15W-50. I am currently using Truck and SUV and may just keep using it since I can't get the new 10W-40 for a good Wal-Mart 5 quart price.
My question is could you mix 15W-50 and 10W-30 extended protection and get close to the same mix as the 10W-40 Extended protection? I wonder if the 10W-40 is a different blend then the others as Mobil 1 says (on their web site)it is good for higher milleage engines and the 10W-30 and 15W-50 do not mention this???
Thanks for the help
Andrew