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Ric	02-22-2005 02:37 PM

Do You Use Synthetic Oil In Your Big Rig?

If so, please specify your new old change interval.

icedad

03-01-2005 02:30 PM

I change filters every 10,000 mi. and oil every 30,000. I send in a oil sample also and have never had a bad report. Knock on wood. I've been using Amsoil since 88.

solo379

03-01-2005 03:09 PM

Every 350-400 hours on eng. Mineral Mobil Delvac.

Sintetic in tranny, and rears, every 250,000 miles.

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