I've had my '05 DIPLOMAT 40PRQ for 5 years, put 25,000 on it, and used the exhaust brake routinely. Didn't realize until recently that regular maintenance was required (lubrication with synthetic oil) and so the learning process continues. PAC brake works well enough for me. Didn't realize there was so much difference in the "Jake brake and the Pac brake. Thanks for the education. It's a good day when you can learn something new! :-)
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TipSanders
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