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Stretched my fuel filter interval to 25k after a lab report humbled me
Honestly, I spent a decade changing fuel filters every 15k miles on my older 7.3s because that's what the old timers swore by. Last month, I sent an oil sample to Blackstone on a '00 F-350 and the report showed silicon levels way higher than normal. Turns out, over-servicing actually let dirt sneak past the o-rings on install since I was doing it in a dusty lot. The lab guy said to stretch it to 25k and use a pre-filter setup instead. Now I question every habit I picked up from forums back in 2008. Has anyone else found out their maintenance ritual was doing more harm than good?
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victorhill1mo ago
Dirt getting past the o-rings during a dusty install is real and most guys never think about it. Run a pre-filter and keep your install spot clean, that matters more than the interval itself. Stretch it to 25k with a lab report backing you and you'll save money and your motor at the same time.
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