just keep in mind the temps... in your area, mixing with much oil can be hard on the fuel system...

maybe using like 8 oz, in an entire fuel tank would be OK, keep an eye on the clear filter for clouding though.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Yeah, I won't be mixing much in. Hey, do you know a good fluid to mix into the diesel(other than Seafoam) to get the carbon out of the motor? I think I have carbon buildup and possibly partly clogged injectors. New injectors are $118 a piece!! $576 for a new set of 5!!! That is crazy! I think that I'll just clean mine up, and wait until I need new ones.

years ago i had trouble with my 1957 4.7 L Volvo Commercial Marine Diesel in my boat (1940 Alaska Salmon Troller). I hired a local (Sitka, Ak) Mechanic who turned out to be great, went through the entire fuel system and when finished we ran the boat on straight ATF for 30 Minutes at 3/4 throttle. That's 100% ATF, Mechanic says it's the best fuel you can use, just too spendy to burn it straight. Good lube for fuel system

__________________
Kevin

1971 300SEL 3.5
1972 280SE 4.5
1968 280S Parts Car
1983 300D (5-spd conversion almost completed!)
1986 Toyota pickup 22R 4-spd
1968 Mustang 302 (soon to be 5-spd)
1981 Euro-spec 300d 4-spd parts car

Sold:
1987 300D (had 415,000 miles when I sold it, now has 462,000 and still driven every day!! Original head)

Everything I've been reading says that ATF will ruin you Injector Pump. Now I am doubting everything and double-triple-quadruple checking, 'cause I don't want to ruin anything.

39 is phenomenal, and Id have to wonder if the actual miles traveled are correct, or off due to different tires or something. 33-35 MPG IMO is very doable, and no reason it cant be achieved, IMO. You just need to travel in accordance with the aerodynamics and gearing of the car.

ATF is not a smart additive. Id run TCW-3 oil or a purpose-specific diesel add.

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

X2 on this one. After the nozzel clicks off, I rock and or push up and down of the car, and the fuel will gurggle and drop down the tube. keep doing this till it finally stabilizes. I can get in almost another gallon.

Also use a GPS, set the trip meter to zero and check one against the other. our 240 spedo is off by maybe 3%. Checking the spedo, and it gives me a better MPG figure, compared to the GPS.

Mixing in kero when it is not needed, lowers the lubricity of the already lower lubricity fuel. Diesel today, is not the Diesel when I was a kid 40 yrs ago.

I add 1oz of the 2cyl oil per gallon of fuel.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Not sure you want to do that - overfill after overfill yields gunked up tank breather tube and then other issues.

Fuel always foams. I just fill until it stops. Figure that they designed it this way to leave some headspace in the tank. I figured there was a reason for this.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

x2. I just put it in the hole and let it run til it stops. Stuffing it is asking for trouble IMHO.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I guess I've been asking for trouble for years. B-99 doesn't foam like petrodiesel so I always top it off in the warm months when I burn b-99. Occasionally I do the same as Charlie in the winter. I've only been doing this for 6 years so I'll let you know when the trouble starts. Oh wait now I know why my head cracked.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

... Gasoline is bad to fill to the brim, as it expands and pressurizes the tank tremendously, but Diesel is fine to fill to the filler cap. as long as your breather is working, there is no danger. I'd not fill it to the brim and then park it, only if I'm driving. but I cannot see the harm in filling all the way.
how can a lubricant like D1 or D2 gunk up anything?

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Recommended, no. Necessary, yes.

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

HMMMM, I have had the 240 for 2 years and fill it to the brim if Iam topping off the tank and not just throwing in $20 now and then.

And I have been doing this since 97 when we bought the 85.
And I have been doing this since 81 when I bought the 82 Datsun.

Nothing has been gunked up or plugged up. usually when I fill to the brim, is when we are driving some where and the fuel is being drawn down. I have never had a fuel leakage, or plugged vent.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I am glad to hear that is working fine for you guys.

(When I said asking for trouble I was not thinking of anything dire, just inaccuracy in measuring or spilling on the car unneccessarily and such).

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Well if I fill to the brim each time when on a trip, it give me a little extra distance, plug checking milage, then there isn`t the possible problem of different nozzels clicking off at various levels of filling. it is the same each time by topping it off. I squeeze the nozzel to fill the last little bit, and don`t spill any on the car or ground.

OH, if I get any on my hands, I rub them together and then rub it in my hair to keep it in place.
A little soot added will get rid of the grey.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I have added ATF, ND30, MMO and used Kerosene in most of my diesels.
I can hardly see how 1 qt of anything is going to greatly effect the math providing 39mpg.
With gently driving and ideal conditions, I do not see how it is impossible to believe. No one asked about ambient temp or relative humidity. Cool moist air would also contribute to better efficiency.

Try to duplicate the mileage you found thus substantiating your finding.

__________________
83 300TD (need rear wiper assembly dead or alive)
84 300SD Daily driver
85 300TD almost 400k miles and driven daily.
98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.