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Toyota Engine Sludge Problem

catcher09 · 2002-02-18 06:49:27

After reading other post about Sienna owners having sludge problem, I wonder if these owners are using conventional motor oil and changed their oil at every 7,500 miles or 6 months interval? Does anyone using 100% synthetic (not blend) motor oil and changed their oil at above stated interval also experiencing engine sludge…

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Toyota Engine Sludge Problem

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