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Old 02-28-2016, 04:21 PM   #757 (permalink)
Filipe
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Join Date: Dec 2015
Location: Connecticut
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Drives: '84 Z31, '10 40th
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Quote:
Originally Posted by BoneZ View Post
The raised part of the notch makes it easier for the bolt to thread into it and also that side has the smaller opening to seal more effectively.

I'd also say because the bolt is tightening into the pan, having the open end on the pan would allow for more even crushing and subsequent better seal.
Thank you- I did some more searching and that is similar to what I read elsewhere....is there any reason to be concerned about not completely draining the oil, since the car is still on the ramps when you tighten the bolt back up?

I've always used jack stands on my 300zx, and lowered the car to drain the oil completely, then jacked it back up to put in the drain plug. What are your thoughts folks?

And thanks for the help. Paid the shop to do the first oil change, as a way to let me get under the lift and take a look at the under carriage. From here on out, I plan to do it myself.
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