Quote:
Originally Posted by Rsnail
... if there's much contamination coming out with the first flush, wouldn't it make sense to .... flush it again?
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You can do that if you wish, yes, but I guarantee that the flushing oil will look black whether you have noisy tappets or not. Therefore one flush might be successful and the only way you will know is by refilling with 10W40 with a new filter and driving the car.
Simon