Re: Oil for the old engine
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On Jan 23, 2020, at 2:53 PM, Curt Holland < curt@...> wrote:
Dan, You¡¯ve been given good advice on the need for higher zinc level oils for your engine, specifically to lubricate the interface between the lifters and the cam lobes. Since catalytic converter fouling is a design criteria today, zinc levels have been reduced in many oils to reduce the chances of this fouling. Some excellent suggestions for oil have been listed already, and I¡¯m going to add Shell Rotella T to the list. I think it is called T4 now. I looked the zinc levels up a few years back, and that¡¯s what I run in all my old vehicle engines now. That includes MG¡¯s, Triumphs, and the Willys. I¡¯ve lit these rebuilt engines off with brand new camshafts and lifters using Rotella T and the heavy zinc grease on the cam lobes. Have only run Rotella T since. 4+ years later all is well with the MG. Triumph has a year of running with no issues. Curt ? ? ? ? ? From:?
Sent:?Thursday, January 23, 2020 9:37 AM
Subject: ? I've got a friend, a retired mechanic, advising me that an oil that includes additives to protect the valve train is important with old engines; that these additives were removed from modern oils to protect catalytic converters.?? He suggested these: "This is the oil. They have rebranded to PennGrade. I recommend straight 30w for the Jeep. This might be easier for you to get locally. Since I'm cheap, wondering what others think about this.
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Dan
53 2wd Wagon
Eugene, OR?
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