Switched to Mobil 5w30 SuperSyn w/ K&N filter
#16
07-18-2002, 10:31 PM
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#17
07-18-2002, 11:06 PM
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Originally posted by BADBOLT2
I would stay with the Motorcraft 820s filter.It has a silicone anti-siphon valve it it.
I would stay with the Motorcraft 820s filter.It has a silicone anti-siphon valve it it.
I also Pre-fill the filter with fresh oil before install.It'll take almost 3/4 qt.Then before you start the truck,hold the accelerator to the floor and crank it over for 30-45 sec.then let off the accelerator and start as usual.
hope this helps!
hope this helps!
Also, from my understanding, the computer does lock out the firing of the motor if you go WOT while trying to crank.
#18
07-19-2002, 02:00 AM
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The 5.4 being a modern engine has modern seals in it. There is no split at the parting line or nonsense like that, and they will keep all the oil inside. As a side note: when I had my Buick GN and it had a few thousand miles on it, I tried the Mobil 1. It started leaking on the garage floor imediately. Seems the Buick still had old fashioned rope for crankshaft seals and couldn't deal with the synth oil.
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