leaking transmission

[c911s]

Has anyone experienced leaking 915 transmission with Swepco - not 201, maybe 212 (red)
Transmission did not leak prior to disassembly.
Transmission was rebuilt and when installed and run it leaked a lot.
Transmission was removed and resealed and now leaks again. Minor drips start to form over 24 hours when car is parked, seems to be coming from case seals, although some appear to be coming from differential.
When car is run and brought up to operating temperature it leaks badly.
Just wondering if it is worth trying a different lubricant.
photo of drip area from one week ago and yesterday

[yelcab1]

a 915 with its synchros does not like synthetics. Why did you pick that lube? Drain it, try regular gear oil and see if it stops.

[c911s]

I did not pick the gear oil, it was installed by the shop who rebuilt the transmission.
Will try a different product.

[Bob Kontak]

I had the red SWEPCO in mine because I bought it when I did not know the difference. I think it was the 210. Get it out. Mayo Performance says it's great for gear life but not for synchro life compared to the 201.

Edit - I had some seeping but not dripping. I ran it for 10 years - um, right up to when I had the trans rebuilt.

[gtihop]

Kinda looks like dexron auto trans fluid which alot of trans shops put in newer standard transmissions.

[c911s]

oil is red Swepco 210 racing transmission oil.