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Old October 28th, 2007, 04:47 PM   #21
dgilham0401
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I have a 2000 with the 5.4 as well with almost 125,000 on it and I have been wondering on the oil thing as well. NAPA says it should be 5w-20 but the shops all say 5w-30. Anyone have any idea what it should actually be?
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Old October 28th, 2007, 05:03 PM   #22
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Originally Posted by dgilham0401 View Post
I have a 2000 with the 5.4 as well with almost 125,000 on it and I have been wondering on the oil thing as well. NAPA says it should be 5w-20 but the shops all say 5w-30. Anyone have any idea what it should actually be?
Owners manual knows best, not the local lube tech at the quaker state quickie....



Per ford's tech site: 2000 F-150 with a 5.4 should take 5-30
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Old October 28th, 2007, 05:12 PM   #23
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Well that's whats been put in it so at least that much is right. Thanks.
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Old November 16th, 2007, 06:03 PM   #24
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Thumbs up Correct oil

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Originally Posted by chris1044 View Post
Extremely important. I have seen some of these triton motors that will actually knock/tick severely with the wrong weight oil in them. From what I was told by a Ford engineer, the bearing clearance on them is extremely tight which is one of the main reasons 5-20 is needed.

Additionally, I have seen quite a few of these motors with timing chain issues - the guides seem to wear prematurely or the tensioner fails....but I'd say roughly 5% of the motors with this problem were actually maintained.....


Edit: look at the date on the original post
Exactly correct, I just got back from the Ford dealership and they told me the exact same thing. I have a 2000 F-150 with the 5.4 and it was starting to make that knock / tick so I asked what was the correct oil to be used in these motors. They said 1997 and newer 5.4 all need to use 5w-20 due to just that, the tighter bearing and valve clearance. I have over 125,000 on my motor and it rans great, I love it. Hopefully it will last even longer now that I know the correct oil to use and won't be letting those quick lube guys just shove whatever they have laying around in it.
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Old November 16th, 2007, 09:13 PM   #25
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Quote:
Originally Posted by dgilham0401 View Post
Exactly correct, I just got back from the Ford dealership and they told me the exact same thing. I have a 2000 F-150 with the 5.4 and it was starting to make that knock / tick so I asked what was the correct oil to be used in these motors. They said 1997 and newer 5.4 all need to use 5w-20 due to just that, the tighter bearing and valve clearance. I have over 125,000 on my motor and it rans great, I love it. Hopefully it will last even longer now that I know the correct oil to use and won't be letting those quick lube guys just shove whatever they have laying around in it.
then why does the manual for my 97 say to use 5-30???
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Old November 17th, 2007, 08:47 AM   #26
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then why does the manual for my 97 say to use 5-30???
Because they changed the oil specification in 1999 I believe he said due to the amount of vehicles coming in with the knock / tick and found that a lot of the problems were caused by using the heavier oil. They updated their specifications and switched to 5-20. For more clarity I would suggest going to a dealership (which is what I did) or calling and talking to the service department and ask them to pull the new oil specification chart that they use. I guess that they found that the lighter oil increased gas mileage (minimally) and extended the engine life.
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Old November 17th, 2007, 03:10 PM   #27
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Quote:
Originally Posted by dgilham0401 View Post
Because they changed the oil specification in 1999 I believe he said due to the amount of vehicles coming in with the knock / tick and found that a lot of the problems were caused by using the heavier oil. They updated their specifications and switched to 5-20. For more clarity I would suggest going to a dealership (which is what I did) or calling and talking to the service department and ask them to pull the new oil specification chart that they use. I guess that they found that the lighter oil increased gas mileage (minimally) and extended the engine life.
mine doesn't have this noise problem yours does!!
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