I switched from Rotella 5w-40 to Chevron 15w-40 a thousand miles ago. I haven't noticed a difference except for lower oil consumption.
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I'm getting ready to do an oil change. I was curious what yall think of rotella t 15w-40?
I've been running 15w-40 since I got the rig 4 months ago and got pretty stoked when I saw this rotella stuff in a gallon jug at wal-mart for under $15.
Shell Rotella t 15w-40 recommended?!
(if so now its time to figure out gallon conversion...errrr)
Oil Viscosity-
1fzfe Engine
20w50 oil -7 deg to 38+ 19 f to 100 f
15w40 oil -10 deg to 38+ 14 f to 100 f
10w30 oil -18 deg to 38+ 0 f to 100 f
5w30 oil -30 deg to 8 c -22 f to 46 f
So being I know so little about cars, mechanics, I don't want to damage my engine.
I bought 2 gallons of the Shell Rotella t 15w-40.
Despite the "rotella t" its just regular 15w-40 yeah?
So, I've got 2 extra quarts in my rig of NAPA 15w-40, after I do the oil change today with Shell rotella t 15w-40... is there any harm of topping of with the NAPA 15w-40 down the road?
Modern engine tolerances are very tight and sticking with a lower winter rating allows oil to reach critical valve train areas faster on start up.
Where my rig is operated it's very warm, have never been to "Location: DUMPSTER DIVING", how is the weather there?
I wonder if the phone conversation with CDan was not specifically regarding 15w-40 or what?!
I usedShell rotella t 15w-40 in my 2F 40 recently because I read a recent post from shell that stated that even though they have recently reduced the amount of ZDDP in this grade, it still has more ZDDP than conventional oils did in 2000. It went from 1400 PPM to 1200 PPM IIRC.
ZDDP (Zinc Dialkyl-Dithio-Phosphate) is an additive to help with metal to metal friction. This has been reduced in conventional oils because of EPA regulations and has been blamed for the premature failure of cam shafts in flat tappet engines.
Do a search on ZDDP and learn more than you ever want to know.
I'm will also be using this it in my 3fe 80 in a week or two. Tractor supply has it in 10 quart jugs and autozone carries it in 5 gal buckets. I'm planning on doing a price comparison by quart.