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Old 01-27-2017, 12:55 PM   #1
Mishimoto

 
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Mishimoto 5th Gen SS Direct-Fit Oil Cooler R&D

Hey everybody!

Mishimoto is excited to announce that we're beginning development of our 2010-2015 Camaro SS direct-fit oil cooler kit! Take a look at the first installment of our R&D process below and, as always, let me know if you have any comments or questions!

-Steve



A Cold Heart for the Camaro – Oil Cooler R&D – Part 1: Stock Review & Plans




For the past seven years the 5th Gen Camaro SS has been a staple of track days at Willow Springs, Road Atlanta, Laguna Seca and just about every other road course in America. Another staple of those track days has been a spike in mild heart attacks as those Camaro SS owners glanced down at their oil temperature gauge to find temps in the 290+°F range. Even off the track, though, a hot day mixed with a heavy foot can lead to oil temp related heart problems for both you and your Camaro.


Everything in Balance

When it comes to modern engines and driving, oil temperatures are a balancing act between hot and cold; thin and thick. When straight-weight oil, also known as single-weight oil (like SAE 30), is cold, it’s thicker and more viscous. Higher viscosity means that the oil flows slowly and sticks to surfaces longer. This also means, however, that on cold start-up, it’s much harder for the engine to move the oil and thus bearings and wear surfaces don’t always get the oiling they need until the engine warms up. Oil that is too thick in cold conditions greatly increases engine wear and makes it harder for the engine to start.

The modern solution to reduce engine wear on cold start-up, while maintaining proper oiling when at operating temperature, is mixed-weight oil. This is the oil you normally find on your auto-parts store shelves with a number such as 5W-30 on the bottle. That “W” in the middle stands for “winter” and denotes how easily the oil flows in cold conditions.

Mixed-weight oil starts out life as a straight-weight oil. In order to make the oil mixed-weight, viscosity-improving additives are then introduced. These additives allow the oil to remain viscous at higher temperatures, keeping the bearings and other wear surfaces lubricated. Put simply, a 5W-30 oil flows like an SAE 5 (very thin) oil in cold conditions, but maintains the viscosity of an SAE 30 (thick) oil once the oil reaches operating temperature. Mixed-weight oil allows lubrication to reach the bearings and wear surfaces of the engine quickly when cold and stay there when at operating temperature.


A Thinning Issue


As engines become more powerful and more efficient, their tolerances become very strict. Most modern engines, like our 2016 Camaro SS’s engine require very specific oil.


So, what does all of this have to do with Mishimoto and your Camaro SS? Well, it all comes down to the second number on the oil’s bottle. The engineers at GM carefully crafted the LS3 and L99 engines’ tolerances to play nicely with 5W-30 oil. What’s most important about the “30” is that the viscosity is measured at 210°F. As we’ve determined, oil thins and becomes less viscous as it gets hotter. While the Camaro’s engine is happy with a 30-weight oil at 210°F, at temperatures above 210°F those viscosity-improving additives we talked about earlier begin to lose their effectiveness.

As oil temperature begins to climb into the 290°F range, the oil in the engine begins to “shear” down closer to a 20-weight oil or less. As this happens, the bearing and piston clearances are no longer filled with effective oil. GM’s engineers planned for the eventuality that their vehicles would be driven hard and oil temps would climb above 210°F, but there’s only so much they could do. That’s where Mishimoto comes in.


Heating and Cooling . . . and Heating


A standalone oil cooler provides two benefits to a vehicle. It both cools oil more efficiently than most factory coolers, and it takes some stress off of the main cooling system.


Mishimoto is excited to share that we’ve begun the process of designing an oil cooler for the 2010-2015 Camaro SS. Now that we’ve gotten the scary technical realities out of the way, let’s look at the Camaro’s stock oil cooler and how we plan to improve on that system.

The stock oil cooler on the 5th Gen Camaro SS is a common, liquid-to-liquid design that utilizes the engine’s coolant to regulate the oil’s temperature. This system serves two purposes: to heat the oil to operating temperature quickly, and to cool the oil to the temperature of the coolant once the engine is at operating temperature. The first half of that process is a very important one. The engine’s coolant heats up much faster than the oil would on its own. This is another measure, on top of mixed-weight oil, that allows the oil to flow throughout the engine quickly on cold starts and reduce engine wear.

The second half of the stock oil cooler process is where it tends to fall short. To save weight, time, and money, manufacturers utilize the already-existing heat exchanger that is the car’s radiator to perform the work of cooling both the oil and the coolant. While oil does not directly flow through the radiator, the coolant and oil both flow through separate chambers of the oil cooler. From the oil cooler, the coolant carries heat away from the oil and dissipates it through the radiator (if all of this is a little hard to follow, check out the diagram below for a visualization of how the stock system works). While this may sound like a simple and efficient means of regulating oil temperatures, the stock oil cooler has its advantages and disadvantages.



While the Camaro SS factory oil cooler is attached to the oil pan and block, instead of the oil filter housing, its function is the same as this diagram. (Click to Enlarge)


Pros and Cons

One advantage, as we discussed earlier, is that the coolant heats the oil much faster than it would just circulating through the engine. It also means that the oil remains at operating temperature throughout normal driving, keeping wear surfaces properly lubricated. The main disadvantage, however, appears when the engine is pushed beyond normal driving conditions.

At the track or during spirited driving, or even just sitting in traffic, the coolant temperature can increase beyond 210°F, the temperature at which the oil viscosity is tested. The main purpose of coolant is to carry heat away from the head, block, and cylinders of the engine to prevent damage. Problems occur when the stock radiator and oil cooler cannot dissipate the heat generated by the engine. That is where a standalone oil cooler comes into play.


Plan for the Worst, Cool like the Best

For the 5th generation Camaro SS we plan to retain the factory liquid-to-liquid oil cooler but also introduce a liquid-to-air oil cooler, similar to the factory radiator. Incorporating the stock oil cooler will mean that the oil will still warm up quickly and should make cold starts as easy on the motor as stock. Once the oil warms up, the Mishimoto oil cooler will take over the duty of cooling the oil within operating temperature.


An oil filter sandwich plate allows us to tap into the oil source of an engine quickly and cleanly, without any drilling or tapping.


We plan to mount our oil cooler behind the grill for maximum air-flow and efficiency, while still leaving room for forced-induction intercoolers. In order to tap into the flow of oil, we will be incorporating an oil filter sandwich plate to divert oil into the cooler. To help regulate the oil temperature once hot, we will be offering the oil cooler with both a thermostatic sandwich plate, for those who will both daily-drive and race their cars; as well as a non-thermostatic sandwich plate, for those who plan to primarily race their cars. Finally, as with all of our direct fit oil coolers, this kit will be bolt on, with everything you need to install and go (except oil).


Coming up…

Now that we know how the stock oil cooling system works and how we plan to improve on it, we’ll be looking at mounting options. Keep an eye out for the next post and as always, feel free to let us know if you have any questions or comments!

Thanks for reading!

-Steve
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Old 01-27-2017, 02:41 PM   #2
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That sounds great. I am very interested in a bolt-on oil cooler kit that will keep the stock oil heating function. And when it will be designed to work with my already installed Magnacharger radiator I would likely be one of your first customers for this kit.
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Old 01-27-2017, 02:53 PM   #3
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I'm on board for this as well.

How do you plan to avoid the oil filter plate dropping the filter below the car which will increase the likelihood of it getting sheared off from impacts......
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Old 01-27-2017, 05:05 PM   #4
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Old 01-27-2017, 05:52 PM   #5
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Old 01-27-2017, 11:49 PM   #6
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Very interested since my stock cooler that's bolted to the block is starting to weep.
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Old 01-27-2017, 11:57 PM   #7
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How will ground clearance be with using a sandwich plate type adapter? Since the oil filter is at a pretty low spot.
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Old 01-29-2017, 08:48 PM   #8
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Bring it on!

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Old 01-29-2017, 08:53 PM   #9
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Love to see the install, or at least a diagram of your proposed install. I have a similar set up developed by X25 that I'm install as soon as I get around to removing the front clip (again).....
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Old 01-29-2017, 08:57 PM   #10
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Quote:
Originally Posted by chandretti15 View Post
How will ground clearance be with using a sandwich plate type adapter? Since the oil filter is at a pretty low spot.
Right, especially with the zl1 belly pan...

- Don
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Old 01-30-2017, 10:10 AM   #11
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Quote:
Originally Posted by cross-bones View Post
That sounds great. I am very interested in a bolt-on oil cooler kit that will keep the stock oil heating function. And when it will be designed to work with my already installed Magnacharger radiator I would likely be one of your first customers for this kit.
Quote:
Originally Posted by olblue75 View Post
Very interested since my stock cooler that's bolted to the block is starting to weep.
Quote:
Originally Posted by hammdo View Post
Bring it on!

-Don
Quote:
Originally Posted by Olddudesrule View Post
Love to see the install, or at least a diagram of your proposed install. I have a similar set up developed by X25 that I'm install as soon as I get around to removing the front clip (again).....

Thanks for the feedback! I'm happy to see that you guys are as excited as we are about this!

-Steve
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Old 01-30-2017, 10:19 AM   #12
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Quote:
Originally Posted by KaBoom1701 View Post


I'm on board for this as well.

How do you plan to avoid the oil filter plate dropping the filter below the car which will increase the likelihood of it getting sheared off from impacts......
Quote:
Originally Posted by chandretti15 View Post
How will ground clearance be with using a sandwich plate type adapter? Since the oil filter is at a pretty low spot.
Quote:
Originally Posted by hammdo View Post
Right, especially with the zl1 belly pan...

- Don
Hey guys,

We were very aware of the low point of the oil filter when we were test-fitting this kit. Our oil filter sandwich plates are relatively narrow compared to others on the market and only drop the oil filter about 3/4 in. With both the thermostatic and the non-thermostatic plates, we found that the oil filter still sat above the sub-frame. Even with the ZL1 belly pan, you should have no issues with ground clearance with this kit. The next post will have some photos that show where the oil filter sits, so keep an eye out for that soon.

Quote:
Originally Posted by Olddudesrule View Post
Love to see the install, or at least a diagram of your proposed install. I have a similar set up developed by X25 that I'm install as soon as I get around to removing the front clip (again).....
In the next post we'll be looking at our mounting options and design!

Thanks for the feedback everybody, we always love hearing from the community!

-Steve
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Old 01-30-2017, 11:37 AM   #13
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Awesome. That is basically the last hx I need to install!






-Don
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Old 01-30-2017, 11:47 AM   #14
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Keeping an eye on this. Will you be checking the fit only in stock form, or with LTs as well. I was going to go with my own system with a sandwich plate but there is very little room with LT headers.

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