i have 2 defi gauges (EGT & boost gauge) but no oil temp gauge. I took my car for an oil change and the guy couldnt figure out how to open the plug..

I never saw the underneath of my car ever since I got it modded by a local shop. I got the oil changed last time at mazda and it was fine. but they charge too much.

any help?

 

the drain plug is on the other side, unless they put a return in through the oil drain plug for the turbo.

 

That's the oil level sender. Wrong side of the pan.

 

was there a pic?

 

These are the pics I took. i took my car to the oil change place and finally managed to get an oil change. the guy told me to take it to mazda next time so sad...

anyways these are the pics: on the first pic is that a hose going to the turbo?

on the second one is that the the oil level sender?

 

Yes and yes.
Whoever installed that turbo drain made a mess of it.

 

the wrapped line for the turbo is going in where your oil drain plug should/used to be.