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#1
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Motor oil and Zinc....again
I thought I posted this yesterday, but I went looking for any responses, and I can't find the question....I must be losing it!
I have searched hi and lo for Rotella T CI-4, with no success. I recently picked up some store brand 10W30 from Tractor Supply, that has the CI-4 rating. Would it have the same zinc as Rotella T CI-4? Thanks, |
#2
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Re: Motor oil and Zinc....again
The Rotella T that I just picked up has a designation of CI-4 Plus CI-4 SL. Meaning?
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. |
#3
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Re: Motor oil and Zinc....again
Bump
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#4
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Re: Motor oil and Zinc....again
I've been buying the Rotella T 15W40 CI-4 and CI-4 Plus from Tractor supply for my diesel P/U and my W31 and 442. I picked up some yesterday and when I got home, it says meets CJ-4 as well as CI-4 Plus. No other appearance change in the packaging.
I've heard that is the new low zinc stuff to stay away from in our old cars and trucks. Now what?
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1966 442- L69 4 speed 1968 Ramrod W31- bought new 1968 442 W30-real thing,but a little different 1975 Delta Royale convertible- |
#5
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Re: Motor oil and Zinc....again
Here is an answer from a Mobil 1 tech to the same question I asked of the company about a year ago.
"Mobil1 MX4T 10W40 and Mobil1 V-TWIN 20W50 motorcycle motor oils, Mobil1 15W50 Extended performance and Mobil1 5W40 diesel motor oils contains the higher levels of zinc and phosphorous for your cams. The new energy conserving motor oils do have reduced levels of zinc/phos however, they typically do not have any adverse effects on cams unless you are running higher valve spring pressures. I would suggest you stick with the product listed above if you are concerned about the phos/zinc issues." -Matt |
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