QUOTE(TitanRev @ Dec 27 2014, 03:04 PM)
The thermostat is self controlled and no need to have any external source of power to make it work. It's like your car's coolant thermostat. It is preset to open at a certain set temp 70, 80 or 93. The thermostat is built into the sandwich plate. It act as a bypass valve so when the temp is not reach it will circulate the oil in the engine and not going into the oil cooler.
Another more cheaper solution to control the cooling of the oil is to block off half of the oil cooler fin so that you limit the amount of cooling air to pass through the cooler.
I'm not the guru la, still learning and sharing knowledge with guys here.

I also prefer to DIY a lot to save on cost. Seldom let ppl fix or install. Fixing on/off switch is not that complicated. You just need a relay 4 prong and you can DIY that's all.
U own EBO in Japorn lastaim, you got oil pressure gauge inda kar mar. U can see even with low visco oil in the winter hor, the oil pressure doesn't get lost as long there's no leak. On the other hand, the oil temperature will still continue to rise as per no oil cooler module. With it, on a speeding environment you able to bring down the temperature nia. Otherwise, on idling there won't be much different, probably 1'C or 2'C nia

There are believe that a huge oil cooler will made the oil circulation lose pressure nia, but never heard of adding a cooler made the oil too cold

My opinion only lar. Welcome if anyone wanna challen, coz I don't even hold a ground here as I haven't get 1 cooler to my car other than last time when I was dealing with rotary engines

Basically with or without, I'm still start and drive gently from 30seconds to a minute, after got out from housing area straight away gone wild liao