Biz Jet Fixer
Join Date: Jan 2010
Location: York & Greenville, SC
iTrader: 20 reviews
It's about so much more than that, the difference in engine protection is astronomical. Amsoil at 15k miles has more life left in it than most "premium" over the counter oils do at 5-10k, it's pretty spectacular.
This. At my 14k mile change intervals I still usually have a TBN of ~3.5 and a used viscosity of ~10.3 (Virgin viscosity is 10.5) so very minimal shearing over the 14k mile change interval. With that TBN of 3.5 It'd still be good for another 2500 miles or so but I never push anything to it's max extreme.
Making me want to switch to AMSOIL and whatnot. I did PM JDOS a while ago and asked about it. Not a bad price especially for the intervals you do them at.
Send your oil in for analysis at 10k and let them see where the tbn and viscosity is and that'll let you know how much life is left in it.
It'll be perfectly normal at 10k. I beat on my car, wear metals are always low. Unless the oil sees repeated, extended sessions of elevated oil temps then it won't vary much from how my UOA results look.
Just rolled 30k today on the way home. Also did my 10k maintenance, thanks to Jdos. The old oil probably could have gone another 5000 miles, but as hard as I am on it, it just seems like cheap insurance to me to change it every 10k.
You need to pick up an Amsoil filter next go-round and run it 14-15k. The EA series has a finer micron filtration rating than the Wix's you've been using. They may be manufactured by Wix but there is a difference.
---------- Post added at 11:41 AM ---------- Previous post was at 11:35 AM ----------
This happened yesterday.
2011 5.0 6MT, 3.73, Amsoil SS 10w-30 & MTG, Borla S Type A/B, DSS Alum Driveshaft, AirAid CAI, MGW Shifter, BBR Billet LCAs, FRPP Strut Brace, BMR Springs/Adj Panhard/LCA relos/Adj UCA, Koni Sport Shocks/Struts, Tuned by AED!!!