[AT] Gas problem now diesel

[charlie hill]

Many years ago (about 30) I had the automatic transmission fluid
changed in my truck at a local mom and pot type shop.  Their hired man
did the work and when I got there to pick up the truck it was still on the 
lift
and there were several empty quart bottles of the wrong ATF sitting on the 
bench.
I questioned the guy he told me it was what he had but it was ok to use.
Well my GM truck required Dexron and nothing else.  He stood me down it was
not a problem.  There was no need to argue.  I just drove it to another shop 
and had
it changed again and added them to my list of "do not use" shops.

Then I got curious.  There is a company in NC, fairly near to me, called 
Warren Oil.
They recycle, clean and repackage all sorts of lubricants.   I gave them a 
call.  The
company was small enough at the time that the girl that answered put me 
right though
to the owner of the company.  Here is what  I remember of what he said about 
ATF.  Remember this was 30 odd
years ago:

All ATF is 20 wt oil with an additive package.
The additive package is specific to the brand and design of the 
transmission.
Type F is for Fords.  Type A (what they put in my truck) is generic with 
only a detergent package.
Dexron is for GM.  If he said anything about Chrysler or any of the foreign 
brands I don't remember.
Type F and Dexron both use some sort of package related to the friction 
required for the transmission clutches.
The design of Ford and GM trannies is different and thus require a different 
friction package.
What was put in my truck was type A so it might not have hurt anything but 
the truck was almost new, got driven
hard and put up wet to the tune of 3000 miles a month or more with a fair 
amount of hauling and towing.
I wasn't taking any chances.

Now this one might cause some of you some pause but I've done it many times 
with no ill result.
Sometimes before I change my engine oil, I'll pour a quart of ATF in the 
engine or a quart of Diesel fuel or a mix of the two
and let it run idle for 10 minutes or so.  I was told by someone to do it. 
It seems to help flush everything out of the system.
your mileage might vary.

Charlie

-----Original Message----- 
From: Mike
Sent: Tuesday, May 07, 2013 1:04 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Gas problem now diesel

When I had a "foreign car" repair business back in the '60s, the owner's
manual for the Mercedes Benz diesel powered cars recommended adding some
ATF to the tank (although I cannot recall the ratio). So this is not a
new concept. And MB produces a LOT of diesel engine vehicles worldwide.

Mike S

On 5/7/2013 10:08 AM, Mike wrote:
> Some of you may find this interesting, it is a study that tested the
> lubricity of different diesel additives. MMO actually hurt the
> lubricity of the fuel, when added in the ratio they used. Good old
> Walmart 2 stroke oil fared pretty well given the cost. I wish they
> would have tested transmission fluid as that seems quite popular,
> like Spencer said. I have the study in PDF format if anyone is
> interested. Thanks
>
> http://www.dieselplace.com/forum/76-gm-trucks/64-maintenance-fluids/177728-lubricity-additive-study-results.html
>
>  Mike M
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