I just picked up a 2004 Ford SVT Cobra, Supercharged 4.6 DOHC V8, it has 15,000 miles and was previously run on Motorcraft 5W-20 at a 5000 OCI with the FL820s filter.
This is a summer "weekend" only car that will see lots of spirited driving and some 1/4 mile runs as well. The motor puts out around 450hp/400tq at the flywheel.
I changed the oil to Amsoil 5W-20 with motorcraft filter, and I'm just not sure if this oil is up to the task for how I will drive the car. I considered Redline 5W-20 but am kind scared of the lead in all the UOA's I've seen on this forum, plus I'm going to store it for the winter and don't know if it's such a good idea to leave Redline in there with the possibility of condensation.
I have seen that a lot of people run M1 5W-30 in this motor, but I can't find any UOA's that prove it's any better than 5W-20. Although I have seen some fantastic UOA's for MC 5W-20 in the NA 4.6's.
I think a thicker oil would be better, and I don't care about fuel economy I just want the max protection for my motor.
This is a summer "weekend" only car that will see lots of spirited driving and some 1/4 mile runs as well. The motor puts out around 450hp/400tq at the flywheel.
I changed the oil to Amsoil 5W-20 with motorcraft filter, and I'm just not sure if this oil is up to the task for how I will drive the car. I considered Redline 5W-20 but am kind scared of the lead in all the UOA's I've seen on this forum, plus I'm going to store it for the winter and don't know if it's such a good idea to leave Redline in there with the possibility of condensation.
I have seen that a lot of people run M1 5W-30 in this motor, but I can't find any UOA's that prove it's any better than 5W-20. Although I have seen some fantastic UOA's for MC 5W-20 in the NA 4.6's.
I think a thicker oil would be better, and I don't care about fuel economy I just want the max protection for my motor.