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Old 09-15-2014
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lucaswillemse lucaswillemse is offline
Senior Member
Join Date: Jan 2008
Location: Paramount
Posts: 406

When I had my Allison rebuild 3 years ago 15-40 engine oil is what they installed and recommended. This is one of the biggest truck transmission specialists in the Los Angeles area. The transmission has performed without any trouble for over 20,000 miles.
Lucas Willemse
Paramount, CA
1995 WB 42
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