Can the rubber replacment gasket used on the oil fill cap be used on the fuel tank cap? I noticed that diesel tends to drip out around the fuel cap after a left turn.

Thanks!

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

They are the same. You can even use the tank cap as an oil cap and the other way around.

Sorta. The caps are different, but I think the gasket is the same.

I tried using my fuel cap on my engine once (in an emergency). It did not leak oil as badly as with no oil cap, but it did leak and I also got the side of my car covered in diesel.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Cool! Thanks!

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

You can actually afford to get your tank that full?

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1981 300SD 512k OM603

The fuel and oil cap seals are not identical. Different dimensions and different material.

I agree, with the different sizes anyway. In a pinch you can swap 'em tho.

On the left is a fuel cap, the right, oil.

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83 SD

84 CD

I really do not want to replace the fuel cap, just the gasket. Even if I have to manually cut one out, I'll do it.

I do not run my car to empty, about half a tank is as low as I go so I can "afford" to fill 'er up. When D2 was $2 a gallon, then I would let it go until the reserve light came on.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Buy the gasket for the metal type oil cap.

__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

You might try this in a pinch. Gently remove the gasket and turn it over, replace it, it'll likely not have an indentation on the back side and it should seal. I just did this with an oil cap and it worked perfectly.

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1986 Euro 500SEC "RUF" 9:1CR, "Rose"
1985 Euro 500SEC Cabriolet AMG Widebody
1982 Euro 500SEL "Blue"
2001 Texas Heeler (Aussie/Queensland X) "Sulphie",
2012 Queensland Red Heeler "Squeak"
Best dogs I've ever had.