Its a good oil, heard people using it. Toyota WS also a good oil. I chose for myself Liqui Moly ATF 1800.
Also, VERY important is the correct oil level.

 

ATF Type TLS-LV | Idemitsu Lubricants

Engineered for and meets requirements of Toyota/Lexus/Scion Automatic Transmission with WS specifications.

www.idemitsulubricants.com

I'd have a good guess that it's factory fill.

 

Thanks for the feed back, the ATFs mentioned I know too meet the criteria. Will give this Aisin ATF-OWS a try and post back how it worked out.

 

VW fluid specs are really specific, so anything officially meeting the exact VW spec is fine, but you need to be 100% sure it actually meets the spec, i.e. the VW spec number is actually written on the bottle somewhere. You can't assume that the same fluid used for the same basic transmission is still compatible in a different application, because they will often swap out specific friction materials that change the corresponding fluid requirements.

I once made a mistake using the transmission fluid that was spec'd for an Audi that had the same transmission as my Porsche, and it didn't shift properly anymore- it turns out Porsche had substantially modified the transmission for the specific application, despite being almost an identical unit. In that case it was a manual and they were using a different syncromesh design, but the principle of being 100% certain to not waste time and money still applies.

The IDParts blog has a pretty good table of what fluids each VW model needs: Volkswagen ATF Fluid Guide

Honestly, I find this stuff frustrating and after wasting my time and money on a mistake, I'm no longer willing to risk using the wrong thing for something that is only changed every decade or so... I usually just find the best price I can on VW OEM fluids online and go with that.

 

Interesting note I'll add because I've noticed this.
Most of the known factory fills I've changed out have an unusual characteristic in the fact that when they are exposed to air after draining, it turns purple in color.

No idea if it's supposed to do that, it's just something I noticed.

 

It's the factory fluid. That's what I use in my shop

 

Well guys, thanks for the inputs. I'll use the Aisin, they make the transmission and it will not be in there too long as the box basically has done many miles, still shifts well but over due for a change so will run this for awhile then do another drain and refill just to reduce the fouling from the oil in the cooler, torque converter etc. Will see how this performs and report back on how it all goes.