My machinist was very adament about using an oil with high level of ZDP (Zinc). I used the 800# for the Shell Rotella Tech line, and they admitted they have cut way back on the zinc to meet the new emissions requirements for the new over road trucks. They still have a small amount of zinc.
The easy option is to use an off-road diesel rated oil in your favorite viscosity. The off-road equipment does not have cat converters and still has sufficient zinc. The second option is to buy a special racing oil (can't remember the brand, it is not on any normal store shelf). He has seen a lot of new cams destroyed by the lack of ZDP. Look up the Crane cam site and see their recommendations.
The old answers we have trusted for many years are now a plan for failure with a newly rebuilt engine. Do diligent research, you have paid a lot of $$ to get that engine rebuilt. You want it to last a long time.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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