Glad I stumbled upon this thread. I'm approaching my next oil change and I'll give this product a try. I too have some blue smoke after idling for a while; I noticed that especially in hot weather.

I tried heavier oils etc, nothing helped.
I'll try Rotella and this additive; hopefully something good will happen lol

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2006 X5 4.8is LeMans Blue / creambeige interior
Prod.date: 2006-06-21