Can I Substitute Car Diesel for Boat Diesel Fuel?
Can I Substitute Car Diesel for Boat Diesel Fuel?
Decided to pump the diesel fuel out of the bottom of my tank and see
what kind of crud shows up. If it is bad, I will pump the whole tank
but there is no diesel fuel sold at my winter haul out place.
Nearest pump is four boating hours south.
My question is...can I put in 10-gal Car Diesel fuel till I get down
river and fill up at the boat yard? Is it the same stuff but with
the marine color agent? Don't contact the Diesel Police, please!
Thanks for any info.
Capt Al, #55, C34 _/) "Kindred Spirit
Below are all the responses to this question without any
identifying names….to protect the innocent!
RE: Can I Substitute Car Diesel for Boat Diesel Fuel?
Hi Capt. Al,
The only difference in the fuels are the color additive and road use
tax. The color is to let the "Diesel Police" (DMV) know if
you are using non-tax paid fuel on the highways. In North Carolina
we have a 42.5 cents per gallon road use tax. There is no reason you
should not use the fuel in your boat. There is a hefty fine for
going the other way.
Actually you are better off buying your diesel at a truck stop,
it is probably cleaner fuel.
A trick to drain the tank: disconnect the fuel line at the tank and
replace it with about 20 feet of cheap 1/4 inch plastic tubing, then
pull your speedometer
paddlewheel and drop the tubing through the hole. You can siphon the
fuel from outside the boat, no mess or smell in the cabin.
There is noting illegal or bad about running car diesel in your
boat. It's the same stuff. They just add dye to show that taxes have
been properly paid. You just cannot run marine diesel in your car.
It won't hurt your car, but it's illegal due to taxing.
Yes, it is the same. Scurrilous, unethical and otherwise
delirious people have been known to use D2 from truck stops
exclusively for many years and in several boats. Of course, I fully
discourage you from slighting the Federal Authorities their full
measure of tax and fees on the marine approved and dyed variety.
Yes its the same stuff however the oil companies put additives
into the over the road diesel during the winter month if you are in
a colder climate, hence it is a touch better than the marine diesel.
Go to your local truck stop and get some of whatever they're
selling. Usually, in the winter they sell #1 diesel or a blend of #1
& #2 cause it's thinner and won't get goopy in cold weather.
Summer time they usually sell #2 diesel. Stove oil used for heating
is usually #1 diesel - with no use tax :). Didn't they bag the fuel
tax for boats or remove the requirement for colored fuel?
I used to run up to my local gas station and fill up a five gallon
jug for the boat all the time (much cheaper that way).
I believe they are the same. If so, you can put car fuel in the
boat, but not boat fuel in the car (red diesel means no road taxes
For years I used to fill up 6-Gallon Diesel Jerry Cans at the
Local Truck Stop and fill my boat. Never had a problem, works great.
In fact sometimes it’s better because there is a high turnover and
typically very clean fuel. (p.s. in the past, this way, you could
even bypass the silly boat diesel fuel tax(red fuel?) they had
imposed....I believe that has been repealed by the us congress)
Charlie : Unless I've got my wires crossed, red dyed marine
diesel is free of the big highway taxes. From what I've
experienced the cost of "gas station" diesel is usually
30-50 cents a gallon higher than at a municipal marina. In fact it's
illegal to sell the red diesel to other than a boat and some marinas
will not allow you to fill a container - only put it in your boat's
fuel tank. Usually if I need a fillup I go to where the work boats
go. I also put on about 300hrs a year. Ron APACHE
I don't know about other sates, but, in California, number 2
diesel is the same no matter what pump you get it from. I have never
used fuel from a fuel dock. I always bring a 5-gal jerry can to top
off the tank. Seems easier to me.
The dye in diesel fuel is to show that road tax has been paid on
it. This doesn't apply to boats so car fuel is fine.
I'm going to alert the authorities. The Coast Guard will no doubt
set up a floating blockade, board & seize your boat, then sell
it at a contraband auction.
Anyone want to bid on a highly upgraded Catalina 34?
We have used gas station diesel some before, with no ill effects.
I believe this summer on Lake Michigan, with water down 9 inches
from last years extremely low water, we will be either driving to
the gas station, or walking to the gas dock, as the gas dock only
has 5 feet of water and I have a fin keel.
You can use...Boat Diesel, Car Diesel, Truck Diesel, Tractor
Diesel, Heck you can even go to McDonald's and use their French Fry
Oil.... But those darn Left Over fries get stuck in the Injectors..
:-)A couple of kids in a VW car did just that. They toured the US by
going to drive-ins, getting the used cooking oil.. I think they
called their car .. "Veggie Wagon" or something like that.
In other words .. there is no restriction on diesel..
It is the same fuel. I have been filling cans at the local gas
station. It is a lot cheaper than at the marina. The closet marina
that sells diesel in my area is 12 miles.
I only use car/truck diesel and have no access to
Same/same as far as I know. I put stabilizer in it as I only go
through about a tank a year.
Important: The opinions expressed here are
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the Catalina 34 National Association or Catalina Yachts, Inc.
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suggested modifications or upgrades. Please obtain assistance from a
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