260k on a 2005 Chevy Tahoe z71 with Castrol gtx. Dads got a 1995 z71 pickup with over 400k on rotella t 15-40
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Originally posted by Tx.Fisher View PostWhat he said^^
I use that in my 2006 Silverado. It has 307,000 miles and still runs like a scalded dog.
My son has my hand me down ‘04 Z71 with 323,000 on it and to my knowledge it’s never had a drop of synthetic oil in it.
I think there is a degree of gimmick to synthetic oils.
My 2012 Cummins has 185k on it and I’ve only run regular Rotella in it.
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Originally posted by Backwoods101 View PostIt is as great as “they” say it is? My all time favorite truck has 142,000 on the odometer and plan to drive her till I gotta push her...it’s actually my wife’s truck but she lets me borrow it [emoji28]
If Royal purple isn’t the cats meow...what is?
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To quote our old engine builder when asked about Royal Purple: "I wouldn't use that ***** to start a brush fire". We ran it in one engine and had all kinds of oiling problems. Switched to Amsoil and never had another problem. Dailies don't need special oil to roll around at 2000 Rpm, just keep it clean.
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