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#2565693 - 03/12/12 08:55 PM Switch from 5w20 to10w30 for towing
250SD_54V8 Offline


Registered: 04/20/07
Posts: 15
Loc: Albuquerque, NM. USA
I have a 06 Ford F250 SD with a 5.4L gas V8 with 26,000 miles that I have ben using 5w20 NAPA Syn.in.
I am going to start towing a 26' enclosed car hauler on a regular basis untill I can trade up for a Diesel.
This load will stress my little 5.4 a lot.
Will 5w20 protect my engine or should I switch to a 10w30?
A Ford master tech told me I should use 10w30 or even a 10w40!

What do you guys think?

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#2565697 - 03/12/12 08:59 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
JRed Offline


Registered: 06/01/09
Posts: 1691
Loc: Virginia
If you have oil pressure/temp gauges and you're not towing on steep grades it may not be a huge deal. 10w-30 won't hurt the truck. 10w-40 probably isn't necessary.

If it's going to be that hard on the engine, it'll probably be just as hard on the transmission. Does your truck have an external trans cooler, or one of those "built into the radiator" jokes?


Edited by JRed (03/12/12 08:59 PM)
_________________________
06 Subaru Impreza WRX - Sold. The only mechanical thing I'll ever love.
07 Toyota Prius - Cheap synthetic and PureOne filters.

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#2565707 - 03/12/12 09:05 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
250SD_54V8 Offline


Registered: 04/20/07
Posts: 15
Loc: Albuquerque, NM. USA
The front of this truck is full of coolers it has a seperate engine oil and trans oil cooler. I think it was part of the HD towing package.

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#2565708 - 03/12/12 09:07 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
tig1 Offline


Registered: 01/03/09
Posts: 11769
Loc: Illinois
You may need to be more concerned about the tranny than the engine.
_________________________
2007 Ford Fusion 195,000 miles
M1 0-20 AFE
2007 Ford Focus 163,000 miles
M1 0-20 AFE
10,000 mile OCIs on both engines
M1 ATF
M1 10-30 in all OPE
MC filters


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#2565712 - 03/12/12 09:12 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
DrDusty86 Offline


Registered: 01/04/11
Posts: 1491
Loc: TX
You are FINE! relax and keep it serviced with the 5w20 and service the trans. The SD is a tough truck.
Aside from being a little slow, you'll be just fine

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#2565714 - 03/12/12 09:13 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
OVERKILL Offline


Registered: 04/28/08
Posts: 32646
Loc: Ontario, Canada
Ford tested the poo out of that configuration. Use what they recommend.
_________________________
2016 Durango Limited
2016 Grand Cherokee SRT

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#2565726 - 03/12/12 09:23 PM Re: Switch from 5w20 to10w30 for towing [Re: OVERKILL]
95busa Offline


Registered: 10/15/05
Posts: 1249
Loc: Tennessee
When I worked on wind turbines we would pull massive trailers full of 14,000 pounds of scrap 45 miles to the scrap yard with our F250 Quad Cab 5.4 SD service trucks. They weren't too enthusiastic about it, but they did it for well over 100,000 miles with the cheapest bulk 5w-20 there is. I wouldn't sweat it, those things are tough as [censored].
_________________________
2005 Ford F250 Super Duty 4x4
2009 Dodge Grand Caravan
2014 Kia Forte KOUP- totaled by a drunk driver

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#2565744 - 03/12/12 09:33 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
2015_PSD Offline


Registered: 09/26/10
Posts: 6045
Loc: SE Texas
I have 65,000+ on my F-150 FX4 with a 5.4L and it has only seen 5W-20 and at least 15,000 of those miles have been towing and all of my UOAs have been quite ok. I tow a 28' enclosed trailer and I would not switch to 10W-30 or 10W-40 as I have found no need. 10W-30s and 10W-40s shear into a 20 in short order anyway.

I think the Ford Master Tech needs to take a refresher on the specifications on the engine in question. Strictly speaking, Ford specified 5W-20 for all gasoline engines in the 2006 F-250 with nothing noted as an exception for towing.
_________________________
2015 F-250 PSD.................RT6 5W-40 + CQ Blue (WIX)
2014 Explorer LTD.............M1 AFE 0W-20 + FU
2010 Kawasaki BF750 4x4....RT6 5W-40 + OEM


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#2565751 - 03/12/12 09:39 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
crazyoildude Offline


Registered: 07/23/08
Posts: 9506
Loc: New Jersey
use 5w20 5w30 wont hurt but 5w20 is ideal. 5w20 will let the bearings run cooler because the engine will have less drag
5w20 also get everywhere faster hot or cold

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#2565826 - 03/12/12 10:43 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
RISUPERCREWMAN Offline


Registered: 07/29/08
Posts: 1030
Loc: RHODE ISLAND
Yup stay with 5W-20!
_________________________
2014 Ram 2500 HD 5.7 Hemi 4x4 10K miles
8'Boss SuperDuty Plow
2015 Harley Davidson Ultra Limited 3K miles
2009 Toyota V6 XLE Camry 55K miles

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#2566028 - 03/13/12 08:21 AM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
tig1 Offline


Registered: 01/03/09
Posts: 11769
Loc: Illinois
20wt oil should be fine, but I would switch to a higher quality synthetic if it were me.
_________________________
2007 Ford Fusion 195,000 miles
M1 0-20 AFE
2007 Ford Focus 163,000 miles
M1 0-20 AFE
10,000 mile OCIs on both engines
M1 ATF
M1 10-30 in all OPE
MC filters


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#2566075 - 03/13/12 09:06 AM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
Jeff_in_VABch Offline


Registered: 05/31/11
Posts: 444
Loc: Virginia
I agree with the others that the transmission will pop way before the engine. That engine dosent make enough power to hurt itself.
_________________________
Interests - motorsports/engine building/tuning
Background - Performed work at refineries and several oil blending plants.
Occupation - Mech Engr

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#2566171 - 03/13/12 10:49 AM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
RWDIII Offline


Registered: 07/31/10
Posts: 22
Loc: ariz
I have a F150,2006,5.4 and towing package.I dont tow as much wt as you do but since I tow in hotter area.Ariz desert,I was also concerned.I use 5qts MC5-20 blend and 2nqts 5-30 PP.Seems to do the trick. The trans seems to be the weak link in the 06 pickups followed by the bad spark plugs. mad

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#2566588 - 03/13/12 06:44 PM Re: Switch from 5w20 to10w30 for towing [Re: JRed]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
Originally Posted By: JRed
If you have oil pressure/temp gauges and you're not towing on steep grades it may not be a huge deal. 10w-30 won't hurt the truck. 10w-40 probably isn't necessary.

If it's going to be that hard on the engine, it'll probably be just as hard on the transmission. Does your truck have an external trans cooler, or one of those "built into the radiator" jokes?


Good advice.

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#2566655 - 03/13/12 07:31 PM Re: Switch from 5w20 to10w30 for towing [Re: 250SD_54V8]
JRed Offline


Registered: 06/01/09
Posts: 1691
Loc: Virginia
Originally Posted By: 250SD_54V8
The front of this truck is full of coolers it has a seperate engine oil and trans oil cooler. I think it was part of the HD towing package.


If it has a decently-sized external engine oil AND trans oil cooler then you're probably golden. As others have said, that's not an engine with a high power density so it should be fine.

Transmission will probably be fine too.

Whole truck will probably be fine. It may not act like it's enjoying every moment of towing, but hey.
_________________________
06 Subaru Impreza WRX - Sold. The only mechanical thing I'll ever love.
07 Toyota Prius - Cheap synthetic and PureOne filters.

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