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      07-16-2016, 08:43 AM   #15
123Britt
Lieutenant
United_States
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Drives: 15 M235i AT
Join Date: May 2008
Location: Madison, Alabama

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Pennzoil Recommendation

On the Shell Website they recommend PP Euro 5W-40 and not the 0W-40.
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I believe that I read that the cleaning ability of the Zero weight oil is not as good. Plus the pour point of the 5W-40 is like -42 deg so it makes sense.
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I came from an N54 with Heat and Intake Valve issues. I started using Redline 5W-30, installed a BMS catch can and learned to walnut blast my intakes myself .
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Now that I am in the N55 -- I have researched and since I am changing my oil myself (free maint did not transfer) I have chosen PP EURO 5W-40 while in warranty. Post 50k I will most likely go back to RL due to what believe to be great oil for the N54/N55 (turbos, Heat & cleaning). OCI less than 7.5k
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In BIMMER MAG June 2016 there is Mike Miller talking about the N54 and how to reduce valve build up. The BMW tech community believes you need to : OCI every 5k, use top-tier gas, run the car hard & use BMW fuel cleaner (Techron). Very interesting read on page 30.