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whitedog76 · 02-02-2018, 09:41 AM

I'll agree with Joedoh on this.

When I rebuilt a 700R4 in a K10 I had, I talked to the guys at PATC in depth. They claimed that the radiator mount cooler in 5 times better than the air to oil. They said that if you go to an air to oil cooler, get the biggest one you can fit.

So what did I do? I didn't take their advice and I bought a 20,000 lb Hayden oil cooler. The truck shifted harshly until the trans warmed up, so I routed back through the radiator again and it helped immensely.

Ideal transmission temperature is between 175 and 225. Sounds familiar right? That's the advantage of the radiator cooler. It helps warm up cold fluid and cool down hot fluid. The only reason you would need another cooler is if you are towing heavy loads or racing.

02-02-2018, 09:41 AM	#7
whitedog76 Registered User Join Date: Jan 2014 Location: Peoria, IL Posts: 1,450	Re: 4l60e Trans cooler I'll agree with Joedoh on this. When I rebuilt a 700R4 in a K10 I had, I talked to the guys at PATC in depth. They claimed that the radiator mount cooler in 5 times better than the air to oil. They said that if you go to an air to oil cooler, get the biggest one you can fit. So what did I do? I didn't take their advice and I bought a 20,000 lb Hayden oil cooler. The truck shifted harshly until the trans warmed up, so I routed back through the radiator again and it helped immensely. Ideal transmission temperature is between 175 and 225. Sounds familiar right? That's the advantage of the radiator cooler. It helps warm up cold fluid and cool down hot fluid. The only reason you would need another cooler is if you are towing heavy loads or racing.