T&T: multi-weight oil versus single weight oil in Lehman engines

[JHWardJr at aol.com]

In my humble opinion - any diesel rated oil made today is FAR  superior to 
what was available back when the Lehman engine was designed and  developed.  
Delo, Rotella, Walmart - they are all fine (in a 4 stroke)  so buy what's 
cheapest.  The key is to change it and the filter at a  decent interval.  JeemboNC





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