This is one of those cases where most anything is better than nothing. I normally use a silicone grease, mainly because it's always on my cart and handy. Bearing grease, motor oil, vaseline, etc. will also work, although I prefer greases over oils as they'll stay in place longer. The purpose is to keep the seal lubed up until engine oil takes over the job.
Beav
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ASE Certified Master Automotive Technician w/L1.
ASE Certified Master Medium/Heavy Truck Technician.
Certified EVT (Emergency Vehicle Technician)
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