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97 Dakota 3.9 pre-pre runner build
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Discussion Starter · #1 ·
I live in Arizona where summer temps hit about 110, and it doesn’t cool down. Plus with having a darker color, I can’t drive my truck in the summer with the ac on, without it pushing over 210 (got a 192 thermostat). Rest of the year, and when it’s under 100 degrees, it’s completely fine and I can run it all day long. So I’m looking for an oil cooler, I have an efan swap planned to help take stress off the water pump, as well as adding active hood louvers (small ones) that should help regulate the temps under the hood. CNRAQR 10 Row AN10-10AN Oil Cooler Kit Universal Engine Transmission Aluminium Alloy Black https://a.co/d/btQYRTZ
I found this oil cooler, and want to know if something like this is worthwhile/actually gonna help the truck, or if I’m just gonna stress the oil pump and increase the temperature/stress the engine. I can easily run it to the front of the truck and help with wind flow, but it might end up heating up the coolant more, so idk. Any help on this is very appreciated, I might wait to do something like this after the louvers. I’d like to get it done this winter, before it gets hot again haha
 

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The only reason that I would think that you would have a problem is if your oil pump is already having a problem. You could always install an actual presslure gauge while your doing the update. Im sure might have to buy extra fittings. But you’ll know your getting proper low/high pressure.
Autometer has been a long standing brand.

 

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97 Dakota 3.9 pre-pre runner build
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Discussion Starter · #3 ·
The only reason that I would think that you would have a problem is if your oil pump is already having a problem. You could always install an actual presslure gauge while your doing the update. Im sure might have to buy extra fittings. But you’ll know your getting proper low/high pressure.
Autometer has been a long standing brand.

I just go off the oil pressure gauge I got in the truck, I was just wondering if the added volume affects the pump in a bad way since it’ll need to pump more oil in order to keep the same pressure
 

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97 Dakota 3.9 pre-pre runner build
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Discussion Starter · #6 ·
Check the temp guide for the coolant you using, if my brain working right there some coolants that used to work at different temps (keep around specific temperature) my 0.02c
Not too sure what you mean, like when it boils/freezes? Because all coolants “work” in the sense that they help cool the engine… Do you mean the oil weight? I run 10w30, when I first got the truck I was running 5w30 but it seemed too light, so I was running 10w30. Tried 15w40, got some high oil pressure, but it just seemed sluggish so I switched back to 10w30. For informational purposes, I run Plus 50 II 10w30 John Deere oil, it has superior additives and has ran better than Mobil1, Napa brand oil, shell rotella, and the royal purple. Just smoothest, best operation pressure. For coolant I run a 50/50 premix of John Deere coolgard, which helps prevent the oxidizer ion of aluminum, and shows a leak trail wherever it leaks from out of the engine.
 

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I haven't personally used an add-on oil cooler. But extra cooling doesn't hurt. Yes, it's a little more stress on your oil pump, but easily within it's design limits. If I understand it right, cooler and lines = more resistance = higher oil pressure as your oil pump tries to push oil through all the extra distance. Most people who install oil coolers need them because they tow and/or pull a lot of hills. If you see high engine temps a lot, I recommend a good synthetic oil. They hold up to high temps better.

Manual or automatic transmission? I found out the hard way that Dodge thinks manuals don't need as much cooling. My radiator is about .25 inch thinner than the ones with auto transmissions. I swapped mine out for a Durango unit from a self serve yard. I just don't have a use for the trans cooler lines on it. But it stays cooler longer now. Of course the best way is to have an aftermarket 4-core radiator made for your truck. It's tough to overheat with one of those.
 

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97 Dakota 3.9 pre-pre runner build
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Discussion Starter · #9 ·
It’s got an automatic, with the transmission cooler attached. Haven’t been able to find a higher quality oil than this John Deere stuff. Might end up putting the cooler in anyways, after reading up on this it seems it would help lots with the cast block in cooling, and help the coolant cool the heads.
 

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Not too sure what you mean, like when it boils/freezes? Because all coolants “work” in the sense that they help cool the engine… Do you mean the oil weight? I run 10w30, when I first got the truck I was running 5w30 but it seemed too light, so I was running 10w30. Tried 15w40, got some high oil pressure, but it just seemed sluggish so I switched back to 10w30. For informational purposes, I run Plus 50 II 10w30 John Deere oil, it has superior additives and has ran better than Mobil1, Napa brand oil, shell rotella, and the royal purple. Just smoothest, best operation pressure. For coolant I run a 50/50 premix of John Deere coolgard, which helps prevent the oxidizer ion of aluminum, and shows a leak trail wherever it leaks from out of the engine.
some coolants used to have a working temp 195 another coolant 210 (if properly mixed) used to be written on the coolant container, btw been using G5 and distilled water have not have any problems with it
 

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97 Dakota 3.9 pre-pre runner build
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Discussion Starter · #11 ·
some coolants used to have a working temp 195 another coolant 210 (if properly mixed) used to be written on the coolant container, btw been using G5 and distilled water have not have any problems with it
Your bio says your from Alaska, I don’t think you have problems with ambient air temperature being excessively hot, and with cast engine parts they retain more heat than aluminum/stainless. Yes, your mixture (60% water 40% coolant, or 80/20, other custom mixtures) can help your engine cool better, since antifreeze is an oil and the water portion does all the cooling, but one 50/50 mixture doesn’t cool the engine “better” than another 50/50 mixture. I used to run 60/40 or 70/30, was cooling the engine pretty good and I didn’t have any cooling problems, until I popped a freeze plug late winter when it dropped to about 5 degrees at night, now I consistently run 50/50
 

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97 Dakota 3.9 pre-pre runner build
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Discussion Starter · #12 ·
You possibly might be thinking of a thermostat, having a 180 thermostat opens your cooling system to flow at 180 degrees coolant temperature, same with 192 and 210. I ran 180 once, thinking it would help fuel mileage, but the engine just wouldn’t get up to temperature, so I put back the stock 192 (replacement own, not original thermostat). These can help your engine stay a cooler temperature, but keep in mind, when outside temperatures are around 110, I’ve got a 192 thermostat and the engine will climb a hair past 210.
 
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