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Synthetic is the best (archive)

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Posted by dqm3 on September 12, 2000 at 09:32:50:

In Reply to: Re: How much longer will synthetic.... posted by Bob ///M3 on September 12, 2000 at 08:53:22:

I use regular oil on my first 10,000 miles before switching to synthetic oil. I used the BMW brand for about 15,000 miles and I finally switched to Redline. I'm using a 5/30 weight. I drove my car incredibley hard last weekend. I would say 20-30 minutes of WOT and redlining. I checked my oil afterwards, and it was exactly where it was 2000 miles ago. Amazing stuff!

Paul, I'll be changing the oil and filter in my '99 M3 in the next week or so. I last changed it at 7,500 miles and it is coming up on 10,000 miles. I like changing the oil and filter every 2,500 miles just because I like doing so!

In the last almost 2,500 miles I have not consumed any more oil than the "thickness" (not width) of the dipstick. Virtually no oil consumption at all in almost 2,500 miles. As reported, I'm using Amsoil 0W-30 oil.

Bob ///M3

If you recall, When I bought the car, i was using 1 at /1200 miles...At about 3K miles, I switched to synthetic (mobil1 5w-30), and I continued to consume at the same rate...At 7K, I switched back to conventional, which I've used since...I'm now at 18K miles, and about due for my INspection I. I plan to have the dealer switch me back to BMW branded synthetic.

I'm thinking about keeping that synthetic in for the entire duration between lighted service intervals, or , about 10K miles. All synthetic mfgs will tell you their oil is easily able to last far beyond that...Now, consider that i'm now using about 1 qt / 2K miles...So, even though I may go 10K miles between changes, that includes approx 5 new qts over the period. In addition, I'm thinking about changing just the filter every 5K miles. I believe that this regimen should protect the engine very well.

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