What oil should be used..

RedSC93

Registered User
90,000 on engine that has been pulled apart to check bearings/torque and a full gasket set repair as well as new oil pump water pump etc.. I bought 20-50 vr1 racing oil is that not a good idea to run right away? Should I run 5w30 something lighter? I wont go back to synthetic oil again on a older engine, I have a feeling that's what went wrong with my other engine because of the mileage. I plan on running the oil for about 50 miles then change it again or is any of this not needed?

Thanks for your help always much appreciated.

Jerry
 
That all depends on if you changed the bearings. If yes then run the lighter oil, if no install an oil pressure gauge and judge the weight you should run by the pressure.
 
Well I pulled the main caps to check the bearing and they were fine so I oiled them and torqued them to 80lbs.

Jerry
 
Did you check the rods? The mains in the motor I am doing were fine, but there was some copper popping thru on the top rod bearings. Sounds like your gonna need the heavy oil.
 
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