First, let me say that this is one item I only get from the dealer. I can tell the difference .

Secondly, I have used the same one for the last three valve adjustments with no leaks.

Lastly, It must be torqued to specs. . Now let's all say it together...
It must be torqued to specs. .

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In scuba diving and skydiving as in life, if it isn't fun, your doing it wrong.

Original owner & daily driver, 1983 300SD 298,000 miles.