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Re: engine oil

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Author  [Modern View]

12-27-2013 15:03:24

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I agree, every 2 years should be sufficient. But depending on the conditions, cold, dirt, stored outside, etc. Yearly might be better.

Also I prefer to change the oil at the end of the season, before going into hibernation with possible moisture, acid, or depleted corrosion inhibitors sitting in the crankcase.

Something else I've picked up on, the new automotive oil doesn't have the zinc additive like it used to. It's been removed with the assumption most new engines have roller cams and it's not needed.

Diesel engine oil still has the zinc additive. That's what I use now in everything with flat tappets.

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Joe Scribner

12-28-2013 06:40:12

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 Re: engine oil in reply to Steve@Advance, 12-27-2013 15:03:24  
Steve, you're correct about the zinc additive missing in modern oils. It's ZDDP or Zinc dialyldithiophosphate . This additive is not necessary in many modern engines because they run roller valve trains and there is not a lot of wiping action or side loading on the valves and cam lobes. In our old engines that do run flat tappets there is a lot of wiping load at the cam lobes and I'd highly recommend a heavy duty engine oil with this additive to prevent unwanted or premature wear. Some folks have differing opinions but using a 10w30 diesel oil in my TE-A20 has worked well for me and the oil stays clean.

I found this article on the subject. Take a look. Joe.

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12-28-2013 12:15:34

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 Re: engine oil in reply to Joe Scribner, 12-28-2013 06:40:12  
Thanks Joe, good article. I'll pass that along.

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