Toyota GR series of engine, is a V6 engine with variance of 1GR-FE (3,955cc), 2GR-FE (3,456cc), 3GR-FE (2,994cc) and 4GR-FE (2,499cc), actually there are 5GR and 6GR variance which you may find more info on their model under https://en.wikipedia.org/wiki/Toyota_GR_engine.
Normally, when thinking of a rocker cover gasket, a complete kit may have a main rocker cover gasket, plug seal, rocker cover bush, moon seal, which is depend on the rocker cover design, but this GR series type of rocker cover, there are 2 special o-ring found inside the rocker cover, which some may overlook it.
Can you see the "8" shape o-ring and the "O" shape o-ring in this rocker cover?
The new model of Ford Ranger in Malaysia which have the 2.2 and 3.2 variance of engine, is not a engine that use to be from Mazda WL and WE type of engine, so it become a truly Ford engine, which the design also use on some Land Rover model.
2.2 L Duratorq TDCi ("PUMA" ZSD-422) diesel engine (88 kW and 285 Nm; 92 kW and 330 Nm or 110 kW and 375 Nm) consumes 7.6 L/100 km (37.2 mpg-imp or 30.9 mpg-US) with a six-speed manual or automatic transmission
3.2 L Duratorq TDCi ("PUMA" P5AT) diesel engine (147 kW and 470 Nm) at 8.4 L/100 km(33.6 mpg-imp or 28.0 mpg-US) with a six-speed manual or automatic transmission
Parker's Car Guides announced that the Ranger was to receive a facelift in 2015, along with the possible replacement of the 2.2 litre Duratorq with an all new 2 litre 'Panther' engine.
The above diagram is showing the Mitsubishi 4G63 and 4G64 Camshaft & Valve area, the area we wish to show is at the Camshaft Sprocket near Timing Belt area, under the zone 03171P, let's dismantle the camshaft sprocket for a better view.
This is the camshaft sprocket looks like, sometime mechanic will found oil leaking at this area, and is it necessary to change the whole sprocket to solve the problem? Now, just look at the sprocket, you may notice there is a grove area in the sprocket, and actually it is seal with an o-ring, possible just a change of the o-ring may solve the leakage problem.
Subaru is not a popular model in Malaysia market before that until the Subaru XV model introducing into this market, and the unique boxer engine is already evolve from the older EJ series to current FA and FB series of engine.