Mishimoto MMOP-SPTR Oil Sandwich Plate with Rear-Mounted Thermostat, Gold

Nice

Product looks great! Should fit my application wonderfully! I give this 3 stars because nowhere does it say even on the website there is an adapter nut to actually use the item. Since the adapter nut is specific to this application it should be included or at least it should list that it doesn't come with it. I even watched the install video where they don't say anything about purchase of another part. I'm very disappointed because I was planning on my 2 year project to be ready for startup today and doing burnouts for 4th of July but without this I can't finish the turbo setup.

1.5 year update: still working fine, never bothered to uprate the thermostat. I just tape cardboard to my oil cooler and remove it at the track. I would take a look at the Chasebays sandwich plate if you're looking at this. --- I was in a pinch and needed this to make my new oil temp and pressure gauge functional for a track day. There are two npt ports on either side of the plate. The websites and pictures do a terrible job of conveying where they are on this and the standard sandwich plate, which I believe has just one. For my application, the thermostat appears to partially open to allow flow through the unit at lower temps so my oil does not get up to proper temp while driving to the track. I have to block off my oil cooler in order to keep oil temp around 190-200 on the street and freeway, effectively nullifying the thermostatic feature of this product. I may buy a higher temp thermostat for my next oil change, but it's not that big of a deal tbh. Decent enough product, just be aware of the stock thermostat for your application. Unit is good quality otherwise and am satisfied after 2 track days.

Haven't installed it yet but i was very skeptical of the design at first after testing it out I trust it. When the the thermostat gets up to temp the black plunger comes down and blocks off the bypass so the oil cooler gets full flow instead of only a partial flow. If thermostat fails open the oil cooler will still work it just won't be as efficient. I would upload pictures but Amazon doesn't like the format of my camera

Update 2023: I've been running this plate for four and a half years now with zero issues. I've read some reviews that caution that a thermostat failure would cause oil starvation. This is completely untrue. When the thermostat is closed (cold) oil flows normally directly through the plate and back to the engine, when the thermostat is open (hot) oil flows to the cooler and back to the plate and then back into the engine. If the thermostat failed in either position, or even partially open/closed then oil would still flow, at no time would the engine starve for oil Their is a small bypass in the thermostat, so even when it's closed some oil is flowing to the cooler, this avoids a sudden temp drop when the thermostat opens. I'm very please with the thermostat plate, it's made a huge difference for my engine temps in south Texas. _____ Original review: Used on a 2003 Land Rover Discovery 2 to adapt a factory transmission oil cooler to an engine oil cooler. I was running upwards of 245 degrees F on hot days on the highway, once installed my max oil temps have stayed below 215 degrees F under the same conditions. Normal driving oil temps range between 180F and 200F on even the hottest days here (105F+), I never go above 180F if the outside temp is below 90F. I gave four stars instead of 5 as Mishimoto does not provide info on which port is out and which is return, they state it does not matter; if you use a cooler that runs the width of your radiator it does matter. I had a 50/50 chance of getting it right, I got it wrong. Initial coolant temps went up quite a bit as the hot oil was entering the oil cooler on the cold side of the radiator, dumping the heat back into the cool coolant where there was not enough time for the coolant to cool off before going back to the engine. Once I swapped the hoses at the sandwich adapter the coolant returned to normal, hot oil entering on the hot side of the radiator allowed the fan to cool the fluids down together as they flowed across the width of the radiator. Out is the left port and return is the right port, as you look at the ports on the adapter in the mounted position, if your oil filter mounts from the bottom as is common on most vehicles. The lack of a grounding point for the sensors is an issue as well, though I used no thread sealant neither sensor could provide a signal, I had to add a grounding point and once grounded the sensors worked fine. Makes a huge difference in oil temperature and allows the oil to reach operating temperature normally.