Question about synthetic motor oil in my 6.0L
#1
Question about synthetic motor oil in my 6.0L
It's time for an oil change and I am thinking about changing over to synthetic oil. PLEASE DON'T turn this thread into an oil brand war. I simply want to make sure that a 5w-40 synthetic oil will be fine for the midwest summer months while we tow our 8,000 lb trailer. We plan to take several extended trips and I have been changing my own oil at the 5,000 mile mark. Thanks for your thoughts.
#2
I just recently switched to Mobil 1 Turbo Diesel Truck 5w-40 Synthetic and instantly noticed easier starts and quieter at idle.
I'm sure I will really be able to tell the difference when the cold weather comes. I was previously using DELO 400 15-40, I've got 65k on my truck. I say go for it!
I'm sure I will really be able to tell the difference when the cold weather comes. I was previously using DELO 400 15-40, I've got 65k on my truck. I say go for it!
#3
Join Date: Jul 2007
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#4
5W-40 and 15W-40 have the same high temp viscosity rating as in the 40 designation. Synthetic also tends to coke less at higher temps such as in the turbo than dino oil. the lower number designation is the viscosity rating when cold thus the 5W gives easier starting in cold temps. I think the syn. is a good choice if the cost does not bother you. You still should do 5,000 mile oil changes.
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Join Date: Jul 2007
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#7
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#11
From what I've read on the forums, there's quite a few people running this, even down in Texas where it gets HOT.
#12
AMSOIL - Series 3000 Synthetic 5W-30 Heavy-Duty Diesel Oil (HDD)
From what I've read on the forums, there's quite a few people running this, even down in Texas where it gets HOT.
From what I've read on the forums, there's quite a few people running this, even down in Texas where it gets HOT.
#13
I don't use any Amsoil products myself, but my next gear oil change will be to their Severe Gear oil, it cleans up in comparisons. Also, their 5w-30 oil is a VERY good oil. Please don't turn this into another ignorant Amsoil-hating thread.
#14
No ignorance, I will keep it factual.
No Ford or International viscosity charts recommend or suggest the use of 5W-30 motor oil at temperatures above 30 degrees in their diesel engines.
Amsoil carefully words their application language such as below, note was it says and what it does not really say;
"is recommended for diesel engines and other applications requiring any of the listed worldwide specifications and gasoline engines requiring API SL, SJ, SH . . . or ACEA A3.
• API CI-4+, CF, CF-2, SL • ACEA A3/B3, E2, E3, E5 • Global DHD-1 • JASO DH-1 • Mack EO-M+, EO-N Premium Plus ’03 • DDC Power Guard 93K214 • Caterpillar ECF-1-a, ECF-2 • Cummins CES 20071, 20072, 20076, 20077, 20078 • Volvo VDS-2, VDS-3 • MB 228.1, 228.3, 229.1 • MAN 271/3275 • MTU Type 2"
#15
Join Date: Feb 2005
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5W-40 and 15W-40 have the same high temp viscosity rating as in the 40 designation. Synthetic also tends to coke less at higher temps such as in the turbo than dino oil. the lower number designation is the viscosity rating when cold thus the 5W gives easier starting in cold temps. I think the syn. is a good choice if the cost does not bother you. You still should do 5,000 mile oil changes.
I went back to running Delvac 15w-40 with 2 quarts Mobil TDT 5w-40 and no more loud injectors. I got 102k miles on this truck and decided this will be the oil I'll run from here on.