Flat Work Posted December 2, 2017 Share Posted December 2, 2017 It's time to do an oil change in my truck. This is the first one I'll be doing on it myself. The truck has always been serviced at a Mack dealer, and I would like to continue using what the engine is used to getting. The truck's an '04 CX-613. AC-427 engine. Not looking to start a heated oil brand/type debate. Just curious as to what oil the dealers use. I've got to say that even though I'm not super impressed with the engine's overall power and performance, I have been very impressed that the engine is not an oil consumer. While I've only put about 6,000 miles on it in the 12 months I've owned it, they've been hard-worked miles. And the engine has not burned 1 drop of oil. Quote Link to comment Share on other sites More sharing options...
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