View Poll Results: What do you think I should do?
Keep using same oil (mobile 1 5w-30)
11
39.29%
Switch to GC 0w-30
12
42.86%
Switch to Royal Purple 5w-30
5
17.86%
Voters: 28. You may not vote on this poll
Thinking about switching to a different oil in the 408
Thinking about switching to a different oil in the 408 I have around 6k miles on my 408. I dont have any problems with it and it put down 515rwhp on the dyno. I am using mobil 1 5w30 since I put the motor in. I have been leaning toward the GC 0w30 or the royal purple. Just wanted some input on this.
I've used GC for about 4 years and 40K miles and I wont use anything else. Very low if any oil consumption compared to others I have used in the past,Mobil 1,royal purple, ams oil....
Whatever you do just don't go RP - sludge city. M1 is always a safe bet... I just switched to PP 5w30 - quieted down the engine a little no complaints. M1 always served my engine well for its first 116k miles (still running strong).
I would say AMSOIL. used it my t/a have no complaints at all. did amsoil in a couple of friends cars/trucks and fixed some of there problems. i also had bad luck with royal purple. might be the shops fault on that one.
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, well i have a question , if the oil viscosity is light or soft it gives more HP's ? 
None of the above......
Pennzoil Platinum 10w-30 and Amsoil EaO32 oil filter. In Dyson UOA's over the past 6 years, it's outperformed RP Racing 21, Redline 5w-30, and Mobil 1 5w-30 under daily driving and road course conditions.
Pennzoil Platinum 10w-30 and Amsoil EaO32 oil filter. In Dyson UOA's over the past 6 years, it's outperformed RP Racing 21, Redline 5w-30, and Mobil 1 5w-30 under daily driving and road course conditions.