[Autoputzer]

Edycol says Pennzoil Platinuim Euro 5W-40 is the schnizzel. Pennzoil and Quaker State are both owned by Shell, the former lubricant supplier to BMW. Your link says it meets or exceeds BMW LL-01.

 

[Autoputzer]

Those grades are actually SAE viscosity indices. Here's a graph of some of the indices.

A multi-viscosity rating (e.g. 5W-30) means that the oil's viscosity chart is just below the SAE 5 line at 32F/0C, and above the SAE 30 line at 212F/100C. Here's a chart of an oil's viscosity that just meets the rating of a SAE 5W-40. If an oil's viscosity is between the 0W and 5W line at 32F/0C, it's called a SAE 5W oil. If the oil's viscosity is anywhere between the 30 and 40 line at 212F/100C, it's called a SAE 30 oil.

The SAE viscosity indices are based on a simple test of draining oil out of a container through a tube and timing how long it takes to drain out. There are more important tests of how the oil physically behaves in actual operation. The big one is the high-temperature, high-shear (HTHS) test. The BMW LL-01 requires a HTHS viscosity of 3.5 cP or greater, as does the ACEA A3 B4 specification. But, the BMW LL-01FE (a SAE 0W-30) only requires a HTHS viscosity of 3.0 cP. or greater.

Here's a data screen from the Lubrizol website. Lubrizol is the industry leader in lubricant and fuel additives.

When BMW's spec's their BMW LL-01 oil, they call for it to be an SAE 5W-30, but with a relatively high HTHS viscosity. But, it's SAE viscosity index at 212F/100C is real close to but just below the SAE 40 line. It's probably easier to make a BMW LL-01 oil that's just above the SAE 40 line at 212F/100C. So, that's what Shell, Castrol, Motul, etc. do. Similarly, some oils that meet BMW LL-01 have a SAE viscosity at 32F/0C that's below the SAE 0W line, allowing them to be labeled as a SAE 0W-40 instead of a SAE 5W-40.

 

[Autoputzer]

So you planning on keeping your car another 30k miles? I hope all that oil doesn’t go stale.


Via the interwebs

No, but it's important to "shake well before using." Where I worked, we were required to let oil bottles drain upside down for 24 hours before throwing them in the trash. Being a tree hugger, I started doing that at home. What comes out looks milky compared to the rest of the oil. That milky stuff is presumably good stuff and should be in the engine, not in the dumpster.

 

[Autoputzer]

Unless the milky stuff is simply condensate from your ultra humid Floridian climate mixing with said oil. FL is not only the sunshine state, but also the dew state.


Via the interwebs

This was only 24 hours at a relatively constant temperature. The mayonnaise (water mixed with oil) in BMW engines comes from condensation caused by extreme temperature changes.