I have read threads on royal purple. I've read on the net that 6 quarts cost $53.

I'm just wondering if it's worth it or is it another scam becuase I want the best for my truck

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97 GREEN 4x2, SC, 4.6L, bedliner, 3 inch lift, SUPER CHIPPED, Bilsteins Shocks, FLOWMASTER 50 SERIES, AIR RAID FILTER, PLAT 4 PLUG WITH 8MM WIRES.

 

Don't know much about Royal Purple, but you might want to check out Redline synthetics also. I've used them for years. You can find out more at redlineoil.com.