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justcuz · 07-25-2008, 11:21 AM

Rotella T 30w was purchased by me yesterday and it says it is rated for SJ and older vehicles. The articles linked above still say that it has enough zinc. I would think it would be OK for engines that are already broken in. I use it in my older stuff with flat tappets. I would definately overprotect a new engine though during the break in period.

Heres a thought, how much zinc does ATF or gear oil have in it? Since it is not exposed to emissions equipment the emissions standards may not apply. The operational parameters of both are probably more severe than an engine, why could we not augment our engine with a little (8 or 16 oz.) of ATF or gear oil?

07-25-2008, 11:21 AM	#18
justcuz Registered User Join Date: May 2008 Location: Alta Loma, Ca. Posts: 930	Re: 65 C60 Rotella T 30w was purchased by me yesterday and it says it is rated for SJ and older vehicles. The articles linked above still say that it has enough zinc. I would think it would be OK for engines that are already broken in. I use it in my older stuff with flat tappets. I would definately overprotect a new engine though during the break in period. Heres a thought, how much zinc does ATF or gear oil have in it? Since it is not exposed to emissions equipment the emissions standards may not apply. The operational parameters of both are probably more severe than an engine, why could we not augment our engine with a little (8 or 16 oz.) of ATF or gear oil?