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Discussion Starter #1
Everyone has their preferred brand of oil. So I wanted to find out what is your favorite brand or what brand would you use and possibly why you chose that brand?
 

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ive always used mobil 1. whether its conventional or synthetic. i always stick to mobil 1. never had a problem with before so no reason why i should change.
 

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I have been using Castrol ever since I started doing my own oil changes. Never read a bad review about them and its worked really well for me so far. I try and get the German made Castrol as its a much better grade than the North American made Castrol.
 

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Discussion Starter #5
I used to use Royal Purple but I heard bad things about them plus it caused a knock in my engine. Now I use Castrol too.
 

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any oil these days is "good". Mobil and Mobil 1 aren't the same. In engines that can be pricey to repair or if they are turbocharged, it is extremely difficult to find a comparable priced oil that is better than Mobil 1...
 

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As long as the label says A40 (for gasoline engine) or C30 (for diesel engine), it's a Porsche-approved oil. I personally use Mobil1 ESP 5W30, a full synthetic C30.
 

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I personally use Motul x-cess 5w-40 or Lubro-Moly 0w-40. Amsoil is great but very expensive. Castrol and Mobile1 aren't that great for Supercharged or Turbocharged engines not to mention that all of the US made so called synthetic oils (except Amsolil) are a group III not a group IV as a real synthetic should be.
 

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I personally use Motul x-cess 5w-40 or Lubro-Moly 0w-40. Amsoil is great but very expensive. Castrol and Mobile1 aren't that great for Supercharged or Turbocharged engines not to mention that all of the US made so called synthetic oils (except Amsolil) are a group III not a group IV as a real synthetic should be.
Motul X-Cess meets the specs required by Porsche from what I've read.
Are you guys noticing any differences when using these engine oils over others you may have used in the past?

I heard some oils may actually help with getting better gas mileage, high end oils like Motul, Royal Purple, etc...
 

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Mobil 1 OW-40

I go with what the manufacturer recommends. In the CTT, Mobil 1 OW-40 is what is recommended (9 quarts of it) to be exact. In my wife's MBZ, which is supercharged, it recommends the exact same as well.

Of course, my BMW M5, Castrol 10W-60 is recommended from the manufacturer. If anyone knows the m5board.com if you talk oil to these guys you can get in quite a battle on what to use. The consensus goes with what the manufacturer recommends though and that is Castrol 10W-60.

You can have your oil tested by Blackstone Labs. They run all of kinds of tests on your used oil.
 
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