I just purchased a new radiator. I am replacing my current one which leaks from the upper neck area. Upon inspecting the new dealer unit, I notice that inside both transmission fittings, there are fluffy white, loose powder-like deposits that resemble corrosion. This makes me nervous about severe damage to my transmission, to say the least.

My manual and all knowledge I have gained so far on automatic trannys indicates "even the slighest impurity may cause operational troubles".

Has anyone seen this substance in new radiator tranny lines?

Thanks in advance,

Blake
'86 300E 264,000 miles

Well I would presume your supposed to flush out a new radiator before using it, there made on an assembly line, so I wouldn't expect them to be perfectly clean...I flushed out mine when I had to replace it.

I guess I could flush it before installation. My concern would be that this white powdery substance would remain inside the transmission section of the radiator, come loose and cause damage to the transmission.

Has anyone seen this sort of thing in a new radiator?

Thanks again,

Blake
'86 300E