# Re: Unlabelled Gauge markings

```>It depends on how it is calibrated, but it is somewhat linear I would imagine,
>making your assumption correct. BTW, it's degrees C, not F.

Yes, C, I said that, right?  Umm... I guess I wasn't that clear.

I'm assuming the mark that's between 60C and 130C is 95C,
which translates (I think) to 203F.  I was doing the translation
to compare it with my other car, whose VDO gauge is in F.
That car, by the way, usually floats between 180F & 210F
unless I'm heading up a long mountain pass, then I think
I've seen it get as high as 225 or so, which makes me paranoid
as heck.  Oh, well.  Although the 180F -210F on the Mazda
does come pretty close to the 203F on the Quattro if I've
done the math right.  OK, if my HP 32sII has done the math
right.

Now yours sits at 60C?  Anybody else?  Linus?  Peter?  Mike?
We're in the same weather here in Seattle,  What oil temp do
you see?

By the way, I run Mobil 1 10w30 in the winter and currently am
running 15w50.  I thought that was more in line with the owners'
manual.  I'll have to double-check that when I get down to the
garage.

-Eric Harman (ericha@wrq.com)
'91 200 Quattro (for sale), '90 Mazda 626 Touring Sedan GT
Just saw an ad. for a red '93 Maxima SE w/ 57K miles and a
5-speed.  Sounds perfect except for the miles.

>> When you have a gauge ('91 200 Q oil temp, for instance) that has
>> a labelled mark at 60, an unlabelled one, then a labelled one at 130,
>> what is the value for the middle mark?  Is it just directly between the
>> two?  What if the mark is geographically a lot closer to one of the
>> labelled marks?  So, is my middle mark, which is the one that it rides
>> at most of the time really 95C or 203F?
>>    95 = (60+130)/2
>
>It depends on how it is calibrated, but it is somewhat linear I would imagine,
>making your assumption correct. BTW, it's degrees C, not F.
>
>However, I have a 91 200 Q and the oil temperature tops out at about 60 C. I'm
>running Mobil 1 with 3-5 K oil changes.
>
>
>
>**************************************************************
>Paul Waterloo                    TEL: (860) 267-7714
>HydroAire Incorporated           FAX: (860) 267-7387
>875 Old Hartford Rd
>Colchester, CT  06415          EMAIL: 74543.407@compuserve.com
>**************************************************************
>
>

```