What is a good price for Redline Gear Oil? I am shopping around and have seen price as low as 7.50/qt. Should I keep looking? What's MTL? Is it different than "regular" 75W90? TIA Ed Kellock QCUSA Member #2882 Lansing, IA 91 200qw - Indigo blue, titanium leather 87 gt coupe - Alpine white, white leather, TSW Evo's