Sa mga older innova owners, nagpapulldown na ba kayo oil pan or nagpalinis ng valve head cover? May oil sludge ba? A friend and colleague had his vios (with 100K plus on the odo) done and there was sludging both sa ilalim at valve head cover. The mechanic told him this is common with Toyotas, vioses, altises and innovas. Not sure how accurate for innovas and the prevalence for either gas or diesel variant. Baka may nakaexperience na, please do share.


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