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Chevy Blazer
Chevy Silverado
Isuzu Trooper
Ford Expedition XLT

What is the socket size for the oil drain plug for a 1989 Isuzu trooper 4 cylinder?

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January 23, 2009 10:08PM

Take your socket set and try various sockets until you find one that fits...then look at the size on the side of socket...BINGO!!! now you know the size.