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Hey Pablos, I was waiting for a Amsoil guy to speak up :) I'll tell you what I know about what was done to my engine as far as specs go: It was bored 0.30 over and oversized 0.30 Mehale (sp?) pistons were fitted and installed. They are not the long skirt pistons. My mechanic could not get them from his supplier and we didn't bother pricing them from Volvo (probably should have). He said the wrist pin fit seemed to be fine (nice and tight) during reassembly. The head was plained 0.10, to give a minute boost in compression. We have not listened to the engine with a stethascope looking for the 'slap' sound. My mechanic did listen to the engine trying to find another noise, but it turned out to be a bad PS pump (it was outside the shop at night). He did not mention hearing the slap at the time (although we could hear it a bit without the scope). Should I try Amsoil 10W40? I'd rather not use 15W40 if I don't have to. My mechanic suggested trying a "Molylube" synthetic 5W40 or 10W40 that he can get from his parts supplier. He said is supposed to be real good stuff. Should my engine be ok with the Amsoil 10W30 in it for another 3-4K km (~2500 mi) or should I try something different sooner? I hate hearing that slap, it makes me feel like my engine is hurting itself......also, it's possible that it's becomming more noticeable, it could just be me though. Seems like it *may* have been a little quieter with the Penzoil dino oil in it............. Thanks for the help.
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Chris. Halifax N.S. '91 745Ti, 268K km.
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