Just coming up to my first year anniversary with the srt6, I know the book says to change the oil every 12 month's but I have only done a couple of thousand miles, the oil still looks pretty clean and the FSS has not indicated it needs changing, I just wanted opinions from other owners as to how often you change yours?

Also do you stick to the 0w4 0Mobil 1 as recommended in the book or will any be ok at this viscosity as I bet the garage I bought it from didn't use this.

Thanks

Neill.