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I'm in florida, and run my own shop, been a tech for 12 yrs. Never seen Rotella in 10W30. I use shell products in my shop, and the distributor for fl, S. Ga., and bama doesn't even carry it. I have never seen it in parts stores either.

I will second the question as to which gas engines can beneft..

I work on a GM tall deck 427 big block that is propane carb fueled. Of course this is in a 5500 topkick and is a 1993. the rebuilt engine has 8K on it now and is due for another service. the cam manufacturer wanted rotella put into it. It has been returning good UOA's showing the engine is...

.001 isn't enough to need an adjustment... now 3-4 thousandths is, it is a very simple procedure...

Any reason to not switch over to a synthetic oil i.e. Mobil 1 HM, PP, or max life I think is synthetic blend?

mine is 221K all ok 4K OCI

I personally run pennz 10W30 in my 89 corolla with no probs..

Pennzoil here in north central florida area second place is kendall

I think the lead was high from a spark knock cased by my vacuum advance getting stuck, I did do a lot of sealant work not too long ago, rear main, cam and crank seals, oil pan, valve vocer and all... got tired of having to add so much oil, the valve guide seals will just have to wait... I just...

Hello everyone, this is a great site. I have learned a lot from this place, even though i've been a auto/ diesel tech for 12 yrs. Now my personal car is a 1989 toyota corolla 1.6 DOHC carb'd engine, auto trans, my daily beater. It has 221,500 miles on it and still drives like a dream. Since I...