Moderator: volvite
If i read your post right, you have the fluid still running through the stock cooler. If that is true, you still won't be protected if the radiator cracks internally and leaks coolant into the stock tranny cooler. You need to bypass the stock cooler completely.ajporter03 wrote:This is my first post, I haven't had my Pathfinder too long. But I have an 05, with just over 50,000 miles on it. I have read more than enough about people having problems with coolant mixing with their tranny fluid causing thousands of dollars worth of damage. So I picked up a B&M Trans cooler. Part Number 70268. I installed it in place of the cooler inside the radiator. Now the tranny fluid flows through the B&M cooler, then the stock cooler and back into the transmission. The setup seems to work great. No problems so far.
No, you read wrong.2008PatherfinderS wrote:If i read your post right, you have the fluid still running through the stock cooler. If that is true, you still won't be protected if the radiator cracks internally and leaks coolant into the stock tranny cooler. You need to bypass the stock cooler completely.ajporter03 wrote:This is my first post, I haven't had my Pathfinder too long. But I have an 05, with just over 50,000 miles on it. I have read more than enough about people having problems with coolant mixing with their tranny fluid causing thousands of dollars worth of damage. So I picked up a B&M Trans cooler. Part Number 70268. I installed it in place of the cooler inside the radiator. Now the tranny fluid flows through the B&M cooler, then the stock cooler and back into the transmission. The setup seems to work great. No problems so far.
Someone else probably knows better, but the cooler inside the radiator is either just a reservoir or a very small heat exchanger. I'd wager a bet that its purpose is not to cool the trans fluid but instead to maintain a regular temperature, and in cold climates, help the transmission warm up faster.ajporter03 wrote:I am kind of surprised that you guys don't seem to be too concerned about taking away cooling capacity by bypassing the in radiator cooler and not replacing it with something else. I was a little concerned that the B&M cooler that I added in wouldn't be adequate to make up for bypassing radiator. You guys are a little braver than I would be.
Good luck.
Can you tell use where you mounted this cooler? Also, did you have to cut or fabricate any parts or did is bolt up easily?ajporter03 wrote:...So I picked up a B&M Trans cooler. Part Number 70268. I installed it in place of the cooler inside the radiator....