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Old 07-03-2006, 01:24 PM   #15
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The LB7 Duramax has a water cooled turbo, so the cool down period is not necessary. I am not sure if the LLY and LBZ are water cooled as they have the variable vane turbo.
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Old 07-03-2006, 02:36 PM   #16
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Turbo cool down

Every manufacturer is a little different regarding turbo cool down periods, Ford recommends 7 to 10 minutes " after extended high speed or maximum GVW operation". Unless I am running real hard, I usually shut down in about 3 to 5 minutes. I know you are looking at buying a D/A, but who knows, maybe you will defect.
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Old 07-03-2006, 10:30 PM   #17
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LB7 experience

Quote:
Originally Posted by Pick
The LB7 Duramax has a water cooled turbo, so the cool down period is not necessary. I am not sure if the LLY and LBZ are water cooled as they have the variable vane turbo.
I do a cooldown on my LB7 anyway after a major climb such as up Kimichi Mountain in eastern Oklahoma. We like to stop at the crest and enjoy the view for a while anyway.

Any other time, I figure that by the time I get the trailer parked, my LB7 turbo should be cooled enough.

I never do a cooldown when not towing or when towing on relatively flat terrrain.

I get 14-15 mpg towing my Classic 28 at 60-62 mph; even better when in a caravan rolling along at 55.
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