On the grill block subject, I've tested it with my truck and I actually lose a couple percent mpg with about 80% covered. Can't use it down here in the summer anyway--I think my electric fan wouldn't stop running.
Thanks for the ps pump testing. Interesting results.
Curious that 3/4 ton springs ride better. Wouldn't have guessed. Usually the shocks make the difference on the lighter end of the vehicle...
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