Not only is it OK, it's preferable, that's why they don't make the 10mm any more. The less of the nozzle face you expose to heat, the less heat it has to dissipate.

Get the 7.5's and forget about it.

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1984 300D Turbo - 4-speed manual conversion, mid-level resto

1983 300D - parts car

1979 300TD Auto - Parts car.

1985 300D Auto - Wrecked/Parts.


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"If you don't know where you are going, any road will get you there". Lewis Carrol