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6.7 Motor Problems (2011-2016) 6.7 Motor Problems

 
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post #1 of 3 Old 06-14-2012, 05:31 PM Thread Starter
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Sorry for this

OK first off sorry for this, but im in my truck on the road so i cant really do a search,.

I have a 2011 F550 repo truck. Today I had ford do the oil change and they put 10-30 in it. Now that I have been driving a few hundred miles I noticed my engine is running hotter and I lost about 2mpg and 2 mpg on a truck that averages 11 is bad. So could it be the oil? This problem didnt happen until the oil change this morning.. I checked all fluids and there good. Should I switch out to the t6 5w40 or what? am I gonna hurt the truck if drive easy back the 160 miles to co springs?

MINE 03 toyota tacoma 4x4, some total chaos stuff and other bolt ons, 17" of travel all the way around
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WORK 05 F450 with a Century Auto grip wheel lift. Great REPO truck. EGR Delete, livewire tuning, 270K miles and going strong.
WORK2011 F550 flatbed, stock for now 55k Miles( gone thing was a POS)
WORK 08 RAM 5500, Snatch Truck, Few goodies to push 450 hp and actually get 17 mpg on the hwy
WORK 01 F550 4x4, jerrdan HPL35 wrecker bed, 278K, stock
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post #2 of 3 Old 06-14-2012, 11:04 PM
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Seeing as how 10w30 is the recommended oil for the 6.7L there is no reason not to run it. They are saying you can use 5w40 for severe use or when running b20 fuel.

1991 Ranger - 38" TSL's, 3 link, One tons, 5.38s on King air shocks....under construction.
1997 Ranger - reg cab flare side, 3.0L, M5OD-R1, 4x4, 31x10.50r15 MT's.
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post #3 of 3 Old 06-15-2012, 03:07 PM Thread Starter
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yeah we went to the dealer and they did the recal reflash and it seems to be running better. I guess we might have to switch to the 5w40.

MINE 03 toyota tacoma 4x4, some total chaos stuff and other bolt ons, 17" of travel all the way around
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WORK 05 F450 with a Century Auto grip wheel lift. Great REPO truck. EGR Delete, livewire tuning, 270K miles and going strong.
WORK2011 F550 flatbed, stock for now 55k Miles( gone thing was a POS)
WORK 08 RAM 5500, Snatch Truck, Few goodies to push 450 hp and actually get 17 mpg on the hwy
WORK 01 F550 4x4, jerrdan HPL35 wrecker bed, 278K, stock
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