ale76051

iTrader: (2)

my 96 firebird formula has been using mobil 1 5w-30 since i've bought it. is there a beter oil that i should use sine my bird has 121,000 miles or should i used a higher weight?

ale76051

iTrader: (2)

also should i stay with mobil1 or switch the another brand?

ThoR294

iTrader: (6)

10W-30. any name brand is good...

hammrman31

i switched from mi 5w30 to mi 10w30 in my 95 lt1. 141000 kms. car only gets driven in summer. seems to have a little better oil pressure with 10w30 m1.

infinitebird

iTrader: (11)

I run 0w40 or 5w40 M1. I've heard that the M1 5w30 is kind of thin compared to some other kinds.

CamaroRacing12

iTrader: (5)

i use 10w-30 mobil 1 97k miles

huge thread on this a lil while ago

Davey J

I just use syntec 20w50 change it every 10 miles or so

stangkiller2005

iTrader: (15)

i just started using mobil 0w30 but the racing kind they have... i like it so far.

96capricemgr

iTrader: (1)

Yolu are getting and will continue to get baseless information. A FEW of us have actually done meaningful research on the subject as opposed to listening to marketing like most of those who have responded sofar apparently do.

If you REALLY care you will spend the 30 seconds to search it and find one of the many threads already started and in there you will find again a FEW of us posting meaningful information.
infinetebird appears to have done more research than most of the others combined.

burnzilla

iTrader: (3)

Mobil 1 is on the thinner side of synthetic's.

I use Royal Purple, AMS Oil (2-stroke oil for sled, fourwheeler), and Mobil 1 for my car and I have never had an issue with either.
I have had real good luck with Mobil 1, put 40K+ miles on my LT1, from 78K-126K, where it is now, over a period of 5 years (only drove in summer) and my motor runs as strong as the day I got it.

I run Mobil 1 10W-30 in my LT1.

95ZLT1

Mobil 1 10w30 sinced ive owned mine.(71k-79k). Haven't put many miles on it but no problems so far.

Semper91-RS

I also run Royal Purple (Not in my Camaro, in my Mustang) and it's never given me issues. In the Camaro I run V Racing oil.

Schweet97Z

iTrader: (35)

www.bobistheoilguy.com .....multiple research tasks have been aquired over on that forum. very interesting and useful information! might be worth a few minute search to read some of the things they have found out. you would be suprised!

Boodyrider

iTrader: (2)

Also, a GREAT oil discussion in Offroad Adventures, a marketing mag for 4WDHArdware.com.
Part 1: http://www.oramagazine.com/pastIssue...4wheel_finesse
Part 2: http://www.oramagazine.com/pastIssue...4wheel_finesse


Short version: really good base stock requires less additives and breaks down more slowly than cheaper base stocks, but ALL API graded oils are pretty darn good when first poured. Cheaper oils tend to have more additives to get them to lubricate well; these additive packages break down more rapidly than the base does. As a result, over time a 'great' base stock with few additives does better at protecting your engine, but if changed frequently enough, even relatively inexpensive oils do a good job... until they start to break down.

Big hint: 'Synthetic" no longer means quite what it did 5 years ago, it is now a legally defined term which can mean a very highly refined conventional base stock.

BOLO

iTrader: (40)

I recently switched to Royal Purple 10w30 from Mobil 1, in which I 've been using since the car was new. To me, I think they're all the same. As long as you change them frequently.