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The sump plug mystery? - Printable Version

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The sump plug mystery? - JJtheHITMAN - 03-12-2013

Why do the hdi's have two sump plugs, one otop of the other? No one seems to know? Iv heard some crap theory's but nothing solid?..........anyone?


RE: The sump plug mystery? - Toms306 - 03-12-2013

Don't know for sure but I always assumed it was for a sensor that was used on other cars with that sump, oil temp or something.


RE: The sump plug mystery? - Midnightclub - 03-12-2013

What he said to be fair.. more than likely for oil temp


RE: The sump plug mystery? - cully - 03-12-2013

i could tell you but id have to kill you cause its a secret!


RE: The sump plug mystery? - Grant - 03-12-2013

If it's the same sump as the XSI/'6 its for the oil temp sensor


RE: The sump plug mystery? - Piggy - 03-12-2013

the 2.1 sump has three Undecided


RE: The sump plug mystery? - JJtheHITMAN - 03-12-2013

Iv never seen any psa sump with a sensor located there though. I dunno. Possibly the designer dropped a bollock and realised he could only drain half the oil so added a lower one as a last ditch attempt . Tbf the blank for a sensor explanation seems more viable though.


RE: The sump plug mystery? - Mattcheese31 - 03-12-2013

so you can pick which angle to drain your oil at . . .ThumbsUp


RE: The sump plug mystery? - Dum-Dum - 04-12-2013

I think there is a set volume of oil left if you have the car perfectly flat (ie on a ramp) and drain from the top one too.


RE: The sump plug mystery? - Lego Jon - 05-12-2013

Might be a mad suggestion but, is it a breather plug?


RE: The sump plug mystery? - Just Sean - 05-12-2013

I always take the filler cap of for a breather when i drain one out


RE: The sump plug mystery? - Lego Jon - 05-12-2013

Good point. Lol