Quote:
Originally Posted by Clifton
I can understand your ignorance is bliss approach to extended oil changes, but that is typically reserved for those who have no mechanical sympathy.
You only need a couple of oil analysis reports to learn the optimum change interval for your application. There is no need to keep sending the oil in once you have the OCI dialed in, unless you just want to or unless you drastically change the service of the vehicle, i.e., switch from all highway to all city.
Guessing the condition of your oil is just that.
PS - did you ever unplug your gas gauge? I think one of your last off-topic rants indicated that you should just fill up more often and you never have to worry about how much gas you have.
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I guess we'll get into it then...
As I've stated a gazillion times on this forum, I've had three BMW's, 1989 E30 (256,000 miles), 1997 Z3 (150,000 miles still in service), and 2006 E90 (161,000 miles still in service). All bought new, all followed BMW's OCI: the E30 - about every 10,000 miles, the Z3 - about every 11,000 miles, the E90 - about every 17,500 miles. No engine failures.
Since experience negates ignorance, I'll state I'm far from ignorant on the subject. Also, I have a full autoshop in my garage, with a lift, air tools, and a full compliment of hand tools worth well over $4,000; so considering that level of investment in DIY maintenance, I think it’s fair to say I'm not mechanically unsympathetic.
BMW already did the testing for me. They've "dialed in" the OCI already; you just don't believe them. And BMW's testing was done under proper test conditions, which we've already gone over previously, unlike an UOA from Blackstone labs.