oil concoction!

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Well, I'v had my car for about 6-7000km's and I'v noticed that the GC has been burning out rather quickly. I'v been topping it off with Havoline 10w30 for a while, and I don't know if its the Havoline, or the GC's action on seals and/or unsticking the rings, but recently oil consumption has gone down dramatically. I have a 1993 Mazda MX-6 with about 270,000km's on the clock so far. It runs great! Actually its producing about 40 more horsepower now, than when I bought it. Anyway, I'm going to change the oil again, since its been about 6000kms on the GC/Hav mix. I bought a jug of Esso XD-3 0w-40, but its mostly PAO and i havent read anywhere if it has any POE mixed in. I would imagine POE would be good for valve stem seals, which I would assume are leaking a bit. I never saw blue smoke come out of my engine before, so i didnt know if it was burning, but the other day I took it to 7500rpm in first and let off the gas, which would probably suck a whole lot of oil past the stem seals, then dropped in into second and I saw blue smoke! Do you think the valve seals could be letting the GC seep past? Whatever it is/was, it seems to have subsided dramatically. like i said, the next oil change will be with the ZD-3 0-40 and a litre of Castrol Syntec 5-30 for it alleged POE content, do you think this mixture would pose any problem???
 
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and I'v noticed that the GC has been burning out rather quickly.

Shh ...be vewry verwy qwiette

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I'v been topping it off with Havoline 10w30 for a while

I imagine that this is getting mental "looks" from the membership..like my wife's uncle gave me when I wanted to mix his expensive scotch with a soft drink. I was there to get a buzz ..not enjoy the flavor of the fine liquor.

Whatever works
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oh man, I lost this topic!!

Well I did the oil change. For whatever reason, I used American Castrol 5-30 x1 litre and the rest is PAO Esso XD-3. Also used an oversized Mitsubishi oil filter made by Nippon Filter (Fram p/n 3950). The car is running very nicely now! I just had that extra litre of Syntec 5-30 and I read that its a High Quality Gr III with some Gr V mixed in, which would be good for the seals. So far so good! I'll check the oil consuption with some more clicks and redlining. I think the GC from before helped reduce it over time (with its green esters and all)
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ps - its been YEARS since encountering regular syntec... but the bottle of sm smells strikinly similar to Quaker State
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I started using Castrol Syntec shortly after if first came out as a (real) synthetic. I didn't know about their switch to Grp.III petroleum when they did it. My clue came as I was changing oil one day and noticed the Syntec had taken on the odor of petroleum just like any other petrol based product. I definitely understood that something had changed. It does seem, however, that Syntec is still a good product. I'm back to using some of it now.
 
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