millers 10w60 in fully foged low milage classic ?
21 October 2011, 01:45 PM
#34
Interesting thread, I have also been wondering about oil temps and what to run recently.
So I am currently running 15/50 in my newage wrx running around 330bhp, this is for weekend and track days, car wont get used much in the winter and is kept in a garage, should I run a thinner oil in the winter?
Also what is too hot for oil? I got up to around 120 (before I backed off) running 10/50 on track so fitted an oil cooler but havn't yet fully thrashed it on a comparable track day to do a comparison?
So I am currently running 15/50 in my newage wrx running around 330bhp, this is for weekend and track days, car wont get used much in the winter and is kept in a garage, should I run a thinner oil in the winter?
Also what is too hot for oil? I got up to around 120 (before I backed off) running 10/50 on track so fitted an oil cooler but havn't yet fully thrashed it on a comparable track day to do a comparison?
21 October 2011, 02:52 PM
#35
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can of worms..............
but in simple terms for the weather conditions we have in the UK there is no reason to be swapping between winter & summer grades............
and for a fully forged motor used in arduous road use and expected to last for miles then a 10w60 will cause no detrimental effects
if we are talking race cars and extracting the last 'nth' of power then a very low viscosity 5w20, 0w20 race oil will be fine BUT not something i would recomend on the road and certainly isn't suitable for extended service intervals as it will be useable for 1 or 2 races MAX
alyn
but in simple terms for the weather conditions we have in the UK there is no reason to be swapping between winter & summer grades............
and for a fully forged motor used in arduous road use and expected to last for miles then a 10w60 will cause no detrimental effects
if we are talking race cars and extracting the last 'nth' of power then a very low viscosity 5w20, 0w20 race oil will be fine BUT not something i would recomend on the road and certainly isn't suitable for extended service intervals as it will be useable for 1 or 2 races MAX
alyn
21 October 2011, 05:35 PM
#37
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Ah Dunx gave it away 
Yes its a proper oil cooler, its the only model that has one fitted as standard due to the car being built for competition use (hence spec c means specification competition), also a transmission oil cooler so its built with temps in mind 
Tony
Yes its a proper oil cooler, its the only model that has one fitted as standard due to the car being built for competition use (hence spec c means specification competition), also a transmission oil cooler
so its built with temps in mind Tony
21 October 2011, 06:58 PM
#38
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I too backed off at 120 degrees, but on the "cooling down" lap it went up to 125 
so I sourced a thermostatic cooler set-up.
dunx
P.S. Sorry Tony
so I sourced a thermostatic cooler set-up.dunx
P.S. Sorry Tony
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