+1
I have always thought of it this way.
If you wash your clothes by hand in just hot water and no detergent the water will look quite clean and the clothes will not be clean. Then you add a cup of detergent and suddenly the water becomes dirty and the clothes are now clean.
I look at oil that way too. We know engines produce carbon deposits and gunge, so I like to see that muck in the oil when I change it. That way I know the engine is clean.
Choice of oil is a mine field and as said before so so many posts about it. That's why I use the one Porsche tested for our cars. Once my big HP mod has been done I will ask Markski what is best but till them its OEM choice oil for me.

 

Quote from my friend who races Porsches and sold me my GT2: "Skip the manual - go 5W-50 synthetic. The earlier recommendations were based on milaege and emission allowances. The new GT2RS (which uses the same engine) likewise has corrected this BS and specifies 5W50 for all temps over -13 F. I've alwys fed it castrol syntec."

 

thanks for clarifying guys!

 

This is true with most cars. Thinner weight oils have more to do with EPA mileage specs than anything else.

 

I have been on a 2.5-3k interval on changes. 83k on the clock. I switched to Castrol Edge Syntec 5w50 last change from M1 5w40 tdt.

No noticeable diff in IMS noise from M1, but after 2k no oil burn and no smoke at start. I was topping off after 800-1000 mi on M1 for the last 20k. Oil looks to be less dark than M1--more honey than black and no smell after 2k. With it getting colder will be switching in 5w40 soon.