I have a 2004 F 250 with a 6.0 and my manual calls for 15w40 and I was wondering if I can use straight SaE 40 in my 6.0?
6.0 oil
- Thread starter Dhenryii
- Start date
- Status
Originally Posted By: Dhenryii
I have a 2004 F 250 with a 6.0 and my manual calls for 15w40 and I was wondering if I can use straight SaE 40 in my 6.0?
Why on earth would you want to?
I have a 2004 F 250 with a 6.0 and my manual calls for 15w40 and I was wondering if I can use straight SaE 40 in my 6.0?
Why on earth would you want to?
Doesn't that engine have issues with foam and the hpop?
Becuase I can get as much chevron delco sae 40 as i want.
Its chevron diesel engine oil delo sae 40
I havent seen any foam
So is it alright or not?
Ok
If you lived in one of those forever hot parts of the world, maybe. It's conceivable that on a cold winter day in the Springs, you might not be able to get the engine to turn over because the oil will have tuned to consistency of sugared honey. Not sure what oil that thick would do the the HPOP. Thick oil tends to make a HUEI truck lope in the winter anyway.
IMO, you'd be taking a big chance.
On top of all that, Delo SAE 40 has only CF API approvals... an approval that goes back into the early '80s.
IMO, you'd be taking a big chance.
On top of all that, Delo SAE 40 has only CF API approvals... an approval that goes back into the early '80s.
Originally Posted By: Jim Allen
If you lived in one of those forever hot parts of the world, maybe. It's conceivable that on a cold winter day in the Springs, you might not be able to get the engine to turn over because the oil will have tuned to consistency of sugared honey. Not sure what oil that thick would do the the HPOP. Thick oil tends to make a HUEI truck lope in the winter anyway.
IMO, you'd be taking a big chance.
On top of all that, Delo SAE 40 has only CF API approvals... an approval that goes back into the early '80s.
+1
In my 6.0 10w30 is what has worked for me from cold starts to 90f in the summer.
A 10w30 will have roughly the same cold pour-point as a 5w-40, with 10w30 being about half of the price.
If you lived in one of those forever hot parts of the world, maybe. It's conceivable that on a cold winter day in the Springs, you might not be able to get the engine to turn over because the oil will have tuned to consistency of sugared honey. Not sure what oil that thick would do the the HPOP. Thick oil tends to make a HUEI truck lope in the winter anyway.
IMO, you'd be taking a big chance.
On top of all that, Delo SAE 40 has only CF API approvals... an approval that goes back into the early '80s.
+1
In my 6.0 10w30 is what has worked for me from cold starts to 90f in the summer.
A 10w30 will have roughly the same cold pour-point as a 5w-40, with 10w30 being about half of the price.
Originally Posted By: Dhenryii
I havent seen any foam
you wont
I havent seen any foam
you wont
I would not run that oil,to thick plus what Jim said.
dnewton3
Staff member
You can use it, but it's not a good idea, especially in your area. You'll have some really hard starting and/or drivability issues until it warms up.
Stick with 15-40 or 10w30 mutligrade HDEO.
Stick with 15-40 or 10w30 mutligrade HDEO.
Last edited:
Many diesels have started and run on straight 30 and 40 weight oils for longer than multi-weight oil has been.....
With saying that.....
Run a good stick on pan/oil heater and plug it in for morning starts. Free oil? is hard to come by, and with the quarts the 6.0 holds...you will save a bundle.
I would only recomend the straight 40w if you use a good stick on pan heater.
With saying that.....
Run a good stick on pan/oil heater and plug it in for morning starts. Free oil? is hard to come by, and with the quarts the 6.0 holds...you will save a bundle.
I would only recomend the straight 40w if you use a good stick on pan heater.
Originally Posted By: LargeCarManX2
Many diesels have started and run on straight 30 and 40 weight oils for longer than multi-weight oil has been.....
Did those engines have HEUI injectors? Use a 10w30 or 5w-40 in the winter and a 15w40 in the warmer months. Oil for Ford Powerstrokes should meet CI-4, CI-4+, or CJ-4 specs.
Many diesels have started and run on straight 30 and 40 weight oils for longer than multi-weight oil has been.....
Did those engines have HEUI injectors? Use a 10w30 or 5w-40 in the winter and a 15w40 in the warmer months. Oil for Ford Powerstrokes should meet CI-4, CI-4+, or CJ-4 specs.
Originally Posted By: rfeir
I would recommend 0W-40 European Formula Mobil 1 for Colorado Springs. Both 15W 40 and a straight 40 are not consistent with cold weather starting and wear issues in any modern motor.
This oil does not have the required API diesel rating according to Mobil's website.
I would recommend 0W-40 European Formula Mobil 1 for Colorado Springs. Both 15W 40 and a straight 40 are not consistent with cold weather starting and wear issues in any modern motor.
This oil does not have the required API diesel rating according to Mobil's website.
Last edited:
OVERKILL
$100 Site Donor 2021
Originally Posted By: Jakebrake
Originally Posted By: rfeir
I would recommend 0W-40 European Formula Mobil 1 for Colorado Springs. Both 15W 40 and a straight 40 are not consistent with cold weather starting and wear issues in any modern motor.
This oil does not have the required API diesel rating according to Mobil's website.
Mobil Delvac 1 0w40 does though, but I think you guys only have the 5w40 variant south of the border
Originally Posted By: rfeir
I would recommend 0W-40 European Formula Mobil 1 for Colorado Springs. Both 15W 40 and a straight 40 are not consistent with cold weather starting and wear issues in any modern motor.
This oil does not have the required API diesel rating according to Mobil's website.
Mobil Delvac 1 0w40 does though, but I think you guys only have the 5w40 variant south of the border
Delvac 1 ESP 5w-40 does have some pretty nice specs, too.
- Status
