Quote:
Originally Posted by 86MLR
I'm in Sydney, Australia
Winter temps are from 0°C in the winter to 45°C in the summer.
Currently running 5w 30
Thicker oil does come with some issues, your oil/engine temps may rise a little (thicker oil not as efficient at cooling), and they take longer to come down.
I'm going to run 0w 30 next and see if that floats my boat.
My assumptions and thoughts for my oil weights are:
Ambient temps
Start up wear
Current oil temp, engine coolant temp when loaded
Street
Khana
General high rpm runs thru the twisties
Forester OEM cooler to help get temps up and to help get rid of some heat from short bursts of high load
Options may vary
There is a ton of info on the interwebs, research the hell out of it and pick something for your application.
You can get your oil tested, but, unless you know what the results from multiple sampling actually means it's not worth the cost, albeit minimal.
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Same conditions, more or less, here in Greece and I use the thickest 5W30 oil (Redline) for my car, for those that want to follow factory recommandations my user manual mentions it clearly, for hard use 5W30 as alternative oil viscosity!