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Ford/oil filter

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Question
I have noticed the fl-1 has different letters after
the 1 what is difference

Answer
Which letters are you referring to ? The A ? As opposed to the S after all the new filters ? The A is just a generic number for sticking purposes . The S on all the new filters lets you know it has the check valve installed which holds oil if say it's installed at an angle or upside down the prevent cold start lubricatiom loss

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brian howard

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I can answer most question from drive ability to electrical, electronics and almost all check engine light concerns from 2000-2013 vehicles

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I am a Ford Certified Master technician. I specialize in drive ability concerns, but can help with most concerns from steering to suspension and climate control relating to Ford And Lincoln/Mercury products from model year 2000 to current

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Ford Certified Master Technician

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