I never even thought about filtering and cleaning. I made Bruce's design from a grease gun with corn oil. Just built it and used it, worked fine. I do keep the top covered when not in use though.

Also an alternative to a pressure holding gauge. You can use a grease fitting at the gauge. That will act as a check valve and hold pressure.

Danny

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1984 300SD Turbo Diesel 150,000 miles

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