Thread: Engine Hours
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Old 11-22-2020, 09:05 AM   #22
Dave R
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Quote:
Originally Posted by Donzi Minx View Post
Wow you two guys are a lot more mechanically talented than I.
The best I could hope for is that the 350 without the pan showed 4-bolt mains.
It was not the original Donzi 350, but with 300 hours after replacement.she should sing (with religious Mobil 1 changes) for another 600 hours before the valve seals start to get tired. Looking forward to retirement and a lot more time on Winnipesaukee next spring.
If the new 350 does not have catalyst exhaust, run Rotella T6 or Delvac 1 instead of Mobil 1 (assuming you want to stay with synthetic). Those oils contain a lot more zinc and phosphorous which are REALLY good for engine longevity. Mobil 1 has to be compatible with modern catalyst engines and cannot contain the same additive packages that diesel oils can contain.
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