Leaded or not???

Ok here are the issues. I own a 93 Mx6 w/atx.
1)There are no oxygen sensors to be found on the car. If they are I cannot locate them. Believe me I checked cuz I went through with an alternator rebuild today, I am sure there is not on the front exhaust.
2) What type of gas should I use? My friend has the same car and on the inner of his gas lid there is a sticker saying use either leaded or unleaded premium gas.

So therefore does this mean that we both don't have 02 sensors and can use any type of gas??????

[93MX6LSV6]

First of all.. I don't know how much of a difference there is in the MTX and the ATX MX6 LS... But I have a 1993 MX6 LS MTX and I have two oxygen sensors... Both of which are mounted on the manifolds... One on the front manifold and on on the rear manifold... I don't know what you have been looking for but I am pretty sure yours has the same..

[MX-6autox]

I use supreme, which is sorry because I'm in CA (91 octane). 93 MTX LS.

[mts3]

If you are in the US, you won't be using leaded gas. They quit selling it back in the early 80s. Premium is reccomended for the V-6 although it will run on regular 87 octane. The PCM will retard your spark timing though if it detects knock, which is caused by running a lower octane fuel.


93MX6LSV6 is right on about the location of the O2 sensors, they are right at the manifold, one per bank on the V-6. OBD-II cars, 96-97, will have an O2 sensor after the cat.

[Stage36]

Nope, hes in the West Indies. im taking it you dont have a label on the filler door?

check to see if you have a catalytic converter, if so, that rules out leaded fuel.

do you have any emissions or 'tune-up' stickers under your hood?

what about on the dash or in the owners manual.

BTW, what is the price difference between the two?

[ck1]

Well there are no labels on the filler lid or anywhere else on the car for that matter that says unleaded. Neither is there anything about emissions. No cat conv either. For sure there is no sensor of any kind on the front exhaust at least, not certain about the rear manifold.
There is a 50 cent difference between the 2...

[Stage36]

looks like itll take leaded fuel. id verify it with either the owners manual or something similar before actually using it, however.

[xeon]

In the meantime I'd use unleaded until you can decipher what is what... if you do have a cat or oxygen sensors, leaded gas will do them in, in short order.

[Stage36]

if he doesnt have an O2 on the front, he doesnt have one on the back either. its a non-emission controlled car shipped to a non-emission country-that still uses leaded gas, BTW...