Re: Identify engine sound?
I worked for Shell Oil 1965-71. Was a Shell Oil dealer 1971-1979. A Union 76 Dealer 1979-1982. A Chevron dealer 1982-1994.
We always had PENNZOIL and QUAKER STATE for those that demamded it, but I also had examples of pistons, valves and oil pans that used those oils and those that used other major branded oils.
If you changed the oil and filter every 3000 miles, most had no trouble. But the parafin wax oils tended to clog oiling galleries, especially on hot engines that never were changed regularily.
I worked for Shell Oil 1965-71. Was a Shell Oil dealer 1971-1979. A Union 76 Dealer 1979-1982. A Chevron dealer 1982-1994.
We always had PENNZOIL and QUAKER STATE for those that demamded it, but I also had examples of pistons, valves and oil pans that used those oils and those that used other major branded oils.
If you changed the oil and filter every 3000 miles, most had no trouble. But the parafin wax oils tended to clog oiling galleries, especially on hot engines that never were changed regularily.
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