I run synthetic in everything I own. Royal Purple in my H2 & Cobra. Rotella T Synthetic in my Duramax & New Holland Tractor. I swear by them.
I see there effects and how many miles they'll go. I work on cars for a living
ASE Certified Master Tech.
Ed
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2004 Hummer H2 " Metallic Red "
20 inch Mojave's (Teflon)(325/60/20) BFG A/T's
MagnaFlow kitty back...Hypertech Tuned..Music to my ears
HCMI Member 50043