The mileage on these is unknown. My truck has approximately 150,000 miles. I owned it for 5 years but I only drive it 2k miles a year ish. The original owner was a older man and seemed rather meticulous.
I don't know what mileage these Autolight XP5245s went in at or if this is a correct plug.
I won't go off on my internet forum and tuning reading decision making but I put in TR55s gapped at .045 rather than factory .060.
The only modification to the truck aside from some exhaust is a 180 or 170° thermostat. Lowering the thermostat temp stops/reduces the oil vapor consumption issue the 8.1 has. And to me these plugs look like the truck consumes oil still but frankly I am hardly seeing any consumption. The only unusual circumstance prior to the plug change was I had this thing idling for probably an hour and a half in the hundred degree weather we had while I have someone sitting in it with the AC on so I could bleed the brakes.
Differences, starts a tad quicker, exhaust smells different, idle is smoother though I liked the way it ran with the old plugs. Mpg was 10-12 prior. Put NGK blue plug wires on it too.
Parked at a random vacant house
I don't know what mileage these Autolight XP5245s went in at or if this is a correct plug.
I won't go off on my internet forum and tuning reading decision making but I put in TR55s gapped at .045 rather than factory .060.
The only modification to the truck aside from some exhaust is a 180 or 170° thermostat. Lowering the thermostat temp stops/reduces the oil vapor consumption issue the 8.1 has. And to me these plugs look like the truck consumes oil still but frankly I am hardly seeing any consumption. The only unusual circumstance prior to the plug change was I had this thing idling for probably an hour and a half in the hundred degree weather we had while I have someone sitting in it with the AC on so I could bleed the brakes.
Differences, starts a tad quicker, exhaust smells different, idle is smoother though I liked the way it ran with the old plugs. Mpg was 10-12 prior. Put NGK blue plug wires on it too.
Parked at a random vacant house
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