azroadie wrote:1. Start with hot engine as oil will drain faster.
azroadie wrote:Castrol Syntec 5w-30
ZetaTre wrote:azroadie wrote:1. Start with hot engine as oil will drain faster.
I personally don't do this: reason is the engine block is aluminum while the bolt is steal. I'm afraid to ruin the tread on the oil pam...azroadie wrote:Castrol Syntec 5w-30
Based on the datasheet on Castrol Website, 5W-30 SOLD IN THE US (i.e. is not the bottle that says Made in Germany on the back) is not approved by BMW since is not ACEA A3 or BMW LL-98/LL-01 (I know the second LL-01 surclasses the LL-98, but I'm not sure which approval is required on the Z4s). Castrol Syntec 5W-40 is LL-98 while 0W-30 is LL-01 (again I'm not sure, but I think is LL-01), while Mobil 1 0W-40 is BMW LL-01. Between the two I would suggest Mobil 1 since it's a real syntetic oil. BMW approval have changed from LL-98 to LL-01 when they extended the oil change intervals (LL stands for longlife, or something like that)
But if you are a BMW CCA member I would go with the dealership oil (I think is a german made Castrol). Once again Europe and US have different standards and what is considered "Syntetic Oil" in the US (what is called hydrocracked or Group III syntetic oil) is not in Europe. I believe Mobil 1 is a Group IV "true" syntetic oil while Castrol Syntec is a Group III.
timscuba wrote:I bought 7 quarts of oil & filter when I picked up my car today. I have about 3000 miles to go for oil change. You mentioned o ring for filter. Does that come with filter or is that a seperate part. Thanks Guys
Shipkiller wrote:I use RoyalPurple....
When I bought the car, it had 46K on the odometer. I needed to establish a baseline for maintenance and especially trends. So I changed the oil with Amzoil. This was for a cleaning effect, and I don't like Castrol....and will under no circumstances use Penzoil or Quakerstate... long story.
With about 2K left on my oil, (4k run time) I put a bottle of Auto-RX in to clean the sludge and varnish out of the engine. I did two filter changes during this time. I changed the oil again with Amzoil for a good flush at approx. 3k of run time and now as of last week, I am running RoyalPurple....
I will not change the oil/filter again until I have 7K on it or four months.... which ever comes first. I don't like the acids to build up over time....
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