Product Description

Oil Cooler Thermostat - RS1456 - Mocal
Oil thermostat with 1/2" push fit connectors - 80ºC opening temperature. Use inline with oil cooler kit and rubber hoses.

Engine oil has an optimum operating temperature designed to maximise lubrication whilst maintaining good oil pressure. Oil coolers help maintain this balance during the summer months but can over cool the oil when the weather starts to get cold. A thermostat will ensure that this doesn't happen.

With an oil thermostat installed, the initial volume of oil warming up to temperature is reduced (ie. the volume of oil within the cooler is not circulated at this time) allowing the engine to reach operating temperature more quickly contributing to a more efficient engine. Once that oil exceeds 80ºC the thermostat opens and gradually introduces the cooler oil as required, closing off if the oil cools to below 80ºC. The temperature threshold of 80ºC is not coincidental as this is the temperature required to evaporate off contaminants which form and concentrate within the engine oil during the combustion process. If these contaminants are not "burnt off" they can cause sludge to form in the crankcase and alter the oil sufficiently enough to cause a chemical attack on the precious white metal crankshaft bearings. This is a common symptom exhibited by engines that cover regular, short journeys.

The thermostat is constructed with lightweight materials allowing it to be easily supported by the rubber hoses.

Also available:
RB7510 - oil thermostat with push fit 5/8" connectors.
RX2039 - oil thermostat with screw fit 1/2" connectors

Specifications and additional product information
Defender 83-06 - All V8 petrol models up to (VIN) GA - Use with RA1089 engine oil cooler kit - Quantity Required - 1
Range Rover Classic - All V8 petrol models up to (VIN) HA610623 - Use with RA1089 engine oil cooler kit - Quantity Required - 1
Prices displayed in: GB Pound Euro US Dollar AUD NZD
£49.00 ex VAT£58.80 inc UK VAT
In stock Most orders ship today!

Related Items

Oil Cooler - 13 Row - 1/2" BSP - ARA221
Oil Cooler - 13 Row - 1/2" BSP - ARA221
£37.50 ex VAT£45.00 inc UK VAT
Thermostat - Oil Cooler 5/8 Push-on - RB7510
Thermostat - Oil Cooler 5/8 Push-on - RB7510
£86.00 ex VAT£103.20 inc UK VAT
Screw In Thermostat - Oil Cooler - 1/2 inch Hoses - RX2039
Screw In Thermostat - Oil Cooler - 1/2 inch Hoses - RX2039
£109.00 ex VAT£130.80 inc UK VAT
Customer Comments
"Really impressed with online chat - located part I needed in minutes thanks!!!" Customer Comment