Synthetic oil
Moderate User
Joined: Oct 2008
Posts: 17,003
Likes: 21
From: Albany, NY
I guess you've never heard of it https://www.mobiloil.com/USA-English...ge_10W-30.aspx. I haven't used it but it claims to be designed for high mileage and possibly dirty/sludged engines. I've seen it at wal-mart in the 5qt jugs so it should be priced around the same as other big jugs of Mobil 1. OP what engine does your truck have?
Didn't know that or maybe I just never payed attention
Also, 5qt jugs? Generally they are 1 gallon jugs which is only 4qts.
Veteran
Joined: Jul 2009
Posts: 294
Likes: 0
They definitely have 5qt jugs hanging around... You just have to find a store that carries it....
Record Breaker
Joined: Dec 2008
Posts: 1,605
Likes: 1
From: VA
Cool so you would be fine w/ 5w30 or 10w30, I'd recommend the 5w30 for winter and 10w30 would be good for warmer times of the year. Also you might want to run a couple short OCI's when you first swap over since the high mileage oil is supposed to do a lot of cleaning.
Record Breaker
Joined: Dec 2008
Posts: 1,605
Likes: 1
From: VA
It's possible, my brother recently swapped his chevy over to synthetic at about 135k miles and it consumed or lost about a qt. over 5k on the first run. It's really up to you CubanBlood, most engines can go over 200k on dino oil w/ reasonable OCI's.
All Star
Joined: Nov 2005
Posts: 878
Likes: 0
From: Ann Arbor, MI
I've never heard of someone switching back and forth so much. Not sure its a good idea either. I've been told that once you switch to synthetic, then you should stay with synthetic.
Record Breaker
Joined: Dec 2008
Posts: 1,605
Likes: 1
From: VA
Well I'm gonna be swapping back and forth between a group III syn. and conventional while using this stuff http://www.auto-rx.com/ (I read about it on BITOG). My engine is only at about 30k though, if you really want some input join bobistheoilguy.com forums and post the question there.