Originally Posted by
NHscrapman
You have a preference for gear lube?
Lube now that's a can of worms that will generate plenty of opinions.
OBDC code said timing was off the mechanic informed the distributor was worn out so we had him change the distributor, timing the engine is done via the OBDC reader. Engine has to be at operating temperature, the thermostat stuck in the open position would not allow the temperature to rise so I changed it then took the truck back to have it timed.
GM recommends 5/30 oil which changes to the heavier viscosity at engine operating temp, with that faulty thermostat the engine during our cold Canadian winter months never did reach operating temp so in essence we were running a 5 weight oil which in my opinion contributed to premature wear.
Changing the distributor is a band aid repair as the gear on the camshaft will have similar wear.
Your snowblower with worm gear drive would be considered a low pressure contact drive, if your going to flush the gear case yearly then refill with new lube choose a cheap one.
Trucks and heavy equipment differentials and transmissions would be considered high pressure contact gears and would require the appropriate lubricant to withstand pressure exerted between the gear teeth and heat.
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