Mobile 1 or as a back up Castrol Syntech = 5w-30 and a quart of Lucas synthetic engine oil stabilizer
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Mobile 1 or as a back up Castrol Syntech = 5w-30 and a quart of Lucas synthetic engine oil stabilizer
Mobil 1 5w30
But the cost stinks.
WHERE THE CRAP HAVE YOU BEEN????Quote:
Originally Posted by Slimsilverado
We don't accept any posts from members who have not posted in a while...
have any of you guys ever used or years of schaffers?? Thats what I use in my race car... Seems to be good stuff and it's cheap. But I'm not sure how to get it from anyone besides race suppliers.
more info bout it would be good MitchQuote:
Originally Posted by mitch cobb racing
6qts of 5w30 conventional castrol with 10oz of full synthetic valvoline oil treatment
okay... so here's a question for all y'all.
my truck: 99 NBS RCSB with a 4.3/5-speed & 4x4
at 135000, i switched from 10W-40 conventional to Mobil1 10W-30 & Wix filters. runs great for a year and a half... but now at 148400, i don't know all the specifics, but it has something to do with a bad rod bearing, a broken rod and the engine can now be best used as a boat anchor.
i was told by the mechanic (who is a long-time family friend & very trustworthy as well as having been mechanic-ing for 40yrs) that it was because i switched to full synthetic, & it washed off all the shellac on the bearings, which then collected in the bottom of the pan & clogged the oil pump. then he showed me at the very tip of the dipstick where it was a bit darker & thicker. that makes me wonder why i never heard of anyone else switching to synthetic & having the same problem.
have any of y'all ever heard of that scenario?
I smell some bovine excrement but listen to some other experienced techs.Quote:
Originally Posted by zebra
My tech said to keep synthetic if you are using it and if you have used regular for many moons keep regular so you do not develop leaks.
I have heard not to switch to synthetics on high mileage engines also.
Think of it as an excuse to slap a 6.0 in it.