Hello helpful listers,

        Two years ago I had a local garage change my auto transmission fluid to synthetic.  I can’t find a record of the type of fluid used.  I need to add some fluid as the indicator is showing the level now just below the lower line.  
        I had the fluid checked with engine hot and running.  I’m also told there is a three or four inch red spot on the tarp where I park the van.  so I assume the fluid is red.  

Anyway.  As the fluid is hopefully synthetic what is the proper synthetic automatic transmission fluid to add?  Parts counter folks have not seemed to have a good recommendation.

Also with the fluid just below the low line how much should I add to try to get it to the middle?  This will be tricky as I believe this is added through the dip stick opening.

So most important what Synthetic fluid should I add?

second how much for the first attempt.

Any other tips or info is appreciated.

Thanks folks 

Eric Caron 
85 GL Auto Westfalia