We have had a few in the shop, I drive quite a few regulars ones, the srt6 is supercharger its the motor thats in the slk320 kompressor or whatever they call it. I my self didnt think it would do a 4.8 60mph but I only drove it threw 1 gear. They are all autos by the way. They use a special oil filter thats located up top of the motor and the normall NA crossfire takes 8 quarts mobile one shouldnt differ from the srt6. The oil change is like 160 bucks if you take it to a dealer witch is alot. The filter alone is like 42 bucks.