Ford Repair Questions? Ask a Mechanic for Answers ASAP
Hello, in order for the oil to not drain back the oil filter needs to be fully secured. Otherwise it won't close the anti drain back valve. If you have an aftermarket oil filter with a large cap they don't always close the drain back valve all the way. That is why it's best to stay with Ford.
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When you remove the filter it's going to drain? Is this what you mean. It only won't drain when the filter is installed. If it is draining back when the filter is install the drain back valve at the bottom can be defective.