A6 fluid flow direction
#1
Race Director
Thread Starter
Member Since: Sep 2007
Location: Peoria/Phoenix AZ
Posts: 16,555
Received 2,060 Likes
on
1,505 Posts
C6 of Year Finalist (performance mods) 2019
A6 fluid flow direction
I've done a search and found conflicting answers and the service manual is vague, so I only want an answer from someone who has first hand experience and has seen the fluid direction.
Is the top port on the radiator transmission cooler the inlet or the return line?
Is the top port on the radiator transmission cooler the inlet or the return line?
#3
Race Director
Thread Starter
Member Since: Sep 2007
Location: Peoria/Phoenix AZ
Posts: 16,555
Received 2,060 Likes
on
1,505 Posts
C6 of Year Finalist (performance mods) 2019
#4
Race Director
Thread Starter
Member Since: Sep 2007
Location: Peoria/Phoenix AZ
Posts: 16,555
Received 2,060 Likes
on
1,505 Posts
C6 of Year Finalist (performance mods) 2019
Either way will provide more cooling, but one direction provides a more stable temperature than the other.
I was hoping for an absolute answer, so I didn't have to do personal experimentation.
Anyone?
#5
Le Mans Master
I see many saying that is the correct flow, and havent seen anyone say the opposite until now. I was trying to confirm this for my cooler install also, but in the end I bypassed the rad completely so it really doesnt matter. Although the B&M cooler is marked "in and out" I spoke with B&M and they told me if its mounted with the fluid attachements up.. it doesnt matter at all. It would matter if mounted with the lines on the side only.
#6
Race Director
Thread Starter
Member Since: Sep 2007
Location: Peoria/Phoenix AZ
Posts: 16,555
Received 2,060 Likes
on
1,505 Posts
C6 of Year Finalist (performance mods) 2019
I see many saying that is the correct flow, and havent seen anyone say the opposite until now. I was trying to confirm this for my cooler install also, but in the end I bypassed the rad completely so it really doesnt matter. Although the B&M cooler is marked "in and out" I spoke with B&M and they told me if its mounted with the fluid attachements up.. it doesnt matter at all. It would matter if mounted with the lines on the side only.