View Poll Results: Specifically for the 2004-2008 5.4L V8 Triton, what oil do YOU use?
0W-40
9
1.06%
5W-20
474
55.76%
5W-30
289
34.00%
5W-40
18
2.12%
10W-30
33
3.88%
10W-40
13
1.53%
Any of them, it doesn't matter
5
0.59%
Other
9
1.06%
Voters: 850. You may not vote on this poll
5.4L Engine Oil - "What Should I Use?"
05-13-2016, 02:56 PM
#61
I voted 5W20, as called for. Over the years for all the Ford vehicles I have owned, I have put over 300k on the 5.4 using nothing but 5W20 Motorcraft synthetic blend. I have had zero engine oil related failures. I tried 5W30 for 2k miles in my 07 Expedition (to hop on the 5W30 cures all bandwagon) and it idled rougher and louder than with 5W20. I promptly switched back to 5W20 and it quitted right down.
05-13-2016, 03:04 PM
#62
It came out of a 05 mustang, manual trans. Extensive dealer(s) records but the thing that stuck out the most was the intervals between a service. Almost all were 5k and above with most between 6-7k. I feel like the oil is fine for 3-4000 miles but beyond that you have depleted the additive package beyond what I feel comfortable with. Now combine that with the known issue of weak oil pumps and low oil pressure and you have oil that doesn't circulate as it should, in there a bit to long and you have what you see here.
05-14-2016, 04:02 PM
#64
I use 10 30 and have for 65 grand. Synthetic Mobil one change every 5 grand with wix filter it has 223000 on the engine and burns about 1/2 a qt in that 5 grand change period. You have to be diligent with the changes.
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o6S1D9e (11-23-2021)
05-24-2016, 11:10 AM
#65
Member
Just changed the oil and put in Mobile 1 5w20 instead of 5w30 like my last two changes. On initial startup there was a lot of cam/chain noise coming from the passenger side. Once the engine warmed up it disappeared. It seems to run a bit smoother and quiter. Not sure if that is just from fresh oil or going to 5w20. I did noticed the cam/chain noise that I hear when the engine is under load or over 2k rpm's has gotten much quieter. All in all I am happy with the change and will most likely stick to the 5w20. LaMartian, can you change my vote from 5w30 to 5w20 please?
06-21-2016, 08:22 PM
#66
Just changed the oil and put in Mobile 1 5w20 instead of 5w30 like my last two changes. On initial startup there was a lot of cam/chain noise coming from the passenger side. Once the engine warmed up it disappeared. It seems to run a bit smoother and quiter. Not sure if that is just from fresh oil or going to 5w20. I did noticed the cam/chain noise that I hear when the engine is under load or over 2k rpm's has gotten much quieter. All in all I am happy with the change and will most likely stick to the 5w20. LaMartian, can you change my vote from 5w30 to 5w20 please?
Sounded like mine....chains were stretched....glad I replaced em...super quiet now. I run 5w20....while I didn't pull the heads it was super clean under valve covers...no gunk or build up was seen.
07-09-2016, 08:58 AM
#67
Camping enthusiast
Idk maybe I needed so go up in weight with full synthetic. Kinda bummed I only had 1k on that oil. $$$ out the window...
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o6S1D9e (11-23-2021)
07-09-2016, 09:18 AM
#68
Some guy
Thread Starter
Well my dreams have been crushed with the full synthetic. After two trips pulling our 6k TT oil was seeping out of my brand new oem valve covers. It only does it when I was really working the engine. Also after I got to the campground the engine sounded loud. No ticking or anything but not as smooth if I'm not pushing it. After returning home I changed the oil back to synthetic blend MC but this time I decided to go with 5w30. We camped over the 4th about an hour drive from home. First thing I did was peak in the wheel wells. Dry as a bone! Also the engine sounds smoother when worked.
Idk maybe I needed so go up in weight with full synthetic. Kinda bummed I only had 1k on that oil. $$$ out the window...
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o6S1D9e (11-23-2021)
07-09-2016, 09:38 AM
#69
Camping enthusiast
My last truck was a 01 screw with the 4.6. Every time it sat for any length of time it puffed a small cloud of blue smoke on start up and not to mention it used about 2 quarts of oil between 3k mile changes.
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o6S1D9e (11-23-2021)
