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997S 3.8 Oil Specification Poll for Track

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Hello Everyone,

Just need some advise on oil for Track. I believe 0W40 and 5W40 is not the right one. 0W40 is good for cold country, 5W40 is better for countries like us. But why a lot of people is using Castrol RS 10W60 for track ... Answer: the oil is thicker and will stay longer on the upper of the engine, better lubrification and less break down! Any experience? Thanks.

Edited by mapoune
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I track my '04 GT3 and drive it on the street the whole year. I've always seen good oil pressure, even on hot days on the track. I believe that Porsche knows what they are doing by recommending synthetic 0W-40 for these cars. The engine wear on cold start is usually much more than many many miles on the road, and the 0W rated oils help reduce this, as well as allowing the variocam mechanism to work correctly. Stick with 0W-40 in my opinion.

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Haven't been able to find Castrol 10W-60 anywhere but BMW dealers and BMW tuners. Shell imports a 10W-60 for Ferrari but again, only seen it at Ferrari dealers, somewhere around $20.00/L.

Most guys who do heavy duty track time change oil and brake fluid after every track session.

No worries about viscosity breakdown if you do that. Not like you a running straight 30 wt dino oil from the '60's.

Stick with the factory viscosity-less risk of a VarioCam burp also.

Isn't the trend for pro teams goiing to a super light weight oil to reduce pumping losses?



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