Are the benefits of redline worth it over mobil 1? Right now I can get mobil 1 for 3.50 a qt at the local target, even cheaper than the 5 qt. jugs at wal-mart and the redline is about 7.50 a quart. Currently I am running castrol gtx and the car is a 01 ss camaro, ls1 engine. It is a weekend driver with only about 6,000 miles a year on it, but it gets driven when I drive it.