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yes, a tonneau cove helps a little, it decreases the amount of wind drag on your tailgate, but so does taking the tailgate off or just putting it down if youre going on a long trip
The previous answer given is technically incorrect. Usually tailgate down you increase the drag on a truck and will get worse mileage. A cover will actually improve you mileage a little but the weight of the cover may negate a portion of this. There are several studies cited online for this. Most places that talk about lowering the gate aren't basing it on science but on what they think is logical. Aerodynamics isn't about logic, it is a very complex science. Mythbusters actually tested this out, do a search on it.
What else can I help you with?
What are the benefits of having a hard tonneau cover on a pickup truck?
The benefits of having a hard tonneau cover on a pick up truck is that it increases gas mileage as well as an increase of security of your personal goods. Another benefit is better protection from harsh weather conditions.
Which pickup trucks offer the most storage capacity?
This depends on whether or not you are using a bed cover. If you are using a bed cover, you can greatly increase the storage capacity of a vehicle. Find a truck's bed size to determine which has the largest bed, and go from there.
How can I properly install pickup covers on my guitar?
To properly install pickup covers on your guitar, first remove the strings and pickups. Place the cover over the pickup and align it properly. Use a soldering iron to solder the cover onto the pickup. Reinstall the pickups and strings, and adjust the height if needed.
Where is the PCV valve on a 1995 350 4x4 pickup?
It is in the valve cover.
Where is the PVC value on an 1987 Toyota pickup?
It's on the valve cover
Where is the PCV Valve in a 1994 Toyota pickup?
smack in the middle of the valve cover
Does insurance cover things damaged while hauling them in a pickup?
It depends on the insurance.
What does mileage reimbursement cover?
the miles driven to and from a destination approved by your job/company
Are guitar pickup covers important on a strat?
The question was asked about pickup covers, not the pickguard, and the answer is, no, the plastic covers that go over the pickups aren't necessary, they are cosmetic, but it would sure look ugly without them.
Why is government is trying to increase forest cover?
bease the forest cover ivaesw
Where is the thermostat on a 96 Nissan pickup?
follow the top radiator hose to the intake, its inside the cover.
Where is the PVc valve on a 1979 ford pickup?
Mine's in the Right Side front Valve Cover
