As EKVTIR-T said OEM for gearbox and any quality oil for the engine. I use OEM MTF for the gearbox which cost $20 a litre. You need 1.8L for a gearbox oil change.
As for engine oil, you have all the choices in the world. I would personally recommend and oils that are 10W-40 Fully Synthetic. My preferred choice is Penrite Everyday 10W-40 Fully synthetic.
As the Type is a performance engine you would atleast need 95 Octane Fuel. But I strongly suggest you use 98. I always fill up with BP Ultimate 98 Octane. It cost me about $75 for a full tank and lasts me for 2 weeks as I dont drive that much.
Also remember that fuel prices fluctuate often. So it could cost about $80 for a full tank at times.
They are great cars, they have the power when you need it. Just dont expect any DC5Rs ride to comfy. But the Recaros in them are amazing. IMO makes up for the harsh ride.
Be prepared to spend about 15-20K for a good one. The components IMO that are most important when buying a DC5 is the Gearbox, Engine, Clutch. Problems that occur in alot of DC5's are rear tailight gasket leaks (Easy DIY fix), Actuators (Easy DIY fix). Note that the DC5 are a 10 year old car. Also the gearboxes in a DC5R is very mechanically noisy. Most owners would agree that though the gear changes are quite smooth, theres a very noticeable mechanical noise that you can hear when you're shifting. Dont that this the wrong way, it's perfectly normal..
Thats all I could think of at the moment.
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