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Thread: Transmission cooler used as an oil cooler

  1. #1
    Join Date
    Apr 2012
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    1987 325is

    Transmission cooler used as an oil cooler

    I'm thinking someone has tried this before. So in my case I have an auto e34 touring that is getting 5-speed swap and then turbo'd. Instead of throwing away my automatic transmission oil cooler, can I use it as an engine oil cooler? I know space is tight on the e34s. Only place to really put the intercooler is in front of the radiator. I want to keep AC and all those bits. So is it feasible? Would it be efficient or pointless? or should I just buy small oil cooler that is designed for that purpose on one side behind the fog light area?

  2. #2
    Join Date
    Jun 2005
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    New England
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    F90 M5; E36 M3 Turbo
    Unless you are tracking the car or live in a very hot area in which you cooling system is struggling, you probably don't need an oil cooler. I bought one about 8 years ago while supercharged but changed to turbo and did not need it because the turbo motor runs cooler than the supercharged motor.

  3. #3
    Join Date
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    I do plan on attending a few novice track days, SCCA track night in America, No Fly Zone 1/2 mile races etc.

  4. #4
    Join Date
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    You won't have any oil temp issues unless you install an oil temp gauge :/
    '97 M3, Estoril blue, 2 dr, euro 6-spd, EFR 9180 divided T4 .92 IWG, RK tuning, CP 8.5:1 pistons, Eagle rods, Schrick cams, L19 11 mm ARP studs, O-ringed block, Supertech stainless/inconel valves, Supertech springs & Ti retainers, ported head, S54 oil pump/pan, 80 lb. injectors, OBD1 intake manifold, Steedspeed twin scroll T4, 3.5" SS exhaust, eBoost2 EBC, HFS-4 W/M injection, AEM Failsafe, Zeitronix data logger, Racelogic TC, OpenOBC w. ethanol %, Ireland Eng. engine mounts, UUC black tranny mounts w. enforcers, UUC twin disc feramic, ARC-8's, MCS 2-ways, Z3 rack, Rallyroad strut bar, X brace, Eibach sway bars, Ground Control LCAB bushings, Bimmerworld RTAB's, Powerflex subframe bushings, 210 4-clutch LSD, Stoptech BBK, titainium shims, steel braided lines, brake cooling ducts.

  5. #5
    Join Date
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    Quote Originally Posted by chikinhed View Post
    You won't have any oil temp issues unless you install an oil temp gauge :/
    This is possibly the most accurate statement I've ever read on this forum
    1995 M3...Screwed

  6. #6
    Join Date
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    Quote Originally Posted by chikinhed View Post
    You won't have any oil temp issues unless you install an oil temp gauge :/
    Quote Originally Posted by Jab31169 View Post
    This is possibly the most accurate statement I've ever read on this forum

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