Oil

[Slimsilverado]

Mobile 1 or as a back up Castrol Syntech = 5w-30 and a quart of Lucas synthetic engine oil stabilizer

[tanz45]

Mobil 1 5w30

But the cost stinks.

[txarkitekt]

Mobile 1 or as a back up Castrol Syntech = 5w-30 and a quart of Lucas synthetic engine oil stabilizer

WHERE THE CRAP HAVE YOU BEEN????

We don't accept any posts from members who have not posted in a while...

[sprayedenali]

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.

[gordo]

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 Mitch

[phantom405]

6qts of 5w30 conventional castrol with 10oz of full synthetic valvoline oil treatment

[zebra]

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?

[zeake]

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.
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.

[SLO TRUCK]

I have heard not to switch to synthetics on high mileage engines also.

[zeake]

Think of it as an excuse to slap a 6.0 in it.