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piston slap--oil??

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Old Mar 20, 2006 | 04:23 PM
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Default piston slap--oil??

will oil weight make a difference in piston slap?
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Old Mar 20, 2006 | 04:25 PM
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It can....sometimes it is a plague that you are stuck with. Mine used to and I actually switched to synthetic right after I bought the car and now i never hear it.
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Old Mar 20, 2006 | 04:33 PM
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what oil are you using now? someone on here admitted to using mobil1 5w20 which is basically water.

I've heard of a few people going from 0w30 german castrol syntec to 5w40 Amsoil European formula and hearing a reduction in slap. Thats a change I also am going to make once the new heads are on.
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Old Mar 20, 2006 | 04:36 PM
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When are you getting the heads?
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Old Mar 20, 2006 | 06:43 PM
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Originally Posted by orangeapeel
When are you getting the heads?
before i get new heads im gonna try to eliminate all other possibilities that could be holding me back, like; lifters, timing chain, and going from a 3" to 4" exghaust then see where im at. and maybe give someone else a shot at tuning her.
another reason im holding back on the heads is because there are alot of new heads coming out later in the year and i would hate to drop the coin now when i coulda waited six more months for a better head.
i was gonna go with either ET perfomance 5.3 or livernois stage 2 ls2/6 heads milled down close to 11.1.

i plan on keaping this car(camaro ss) for a very long time and this the second time im building her up so im gonna do it right this time and be done with her so i can move on to another toy(maybe new camaro or challenger or even wrangler), so im willing to wait a little on the heads.
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Old Mar 20, 2006 | 08:17 PM
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i was using 5w30 mobil 1 and switch to 10w30 and noticed a substantial decrease in engine noise.
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Old Mar 20, 2006 | 08:44 PM
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10w30 here in both cars.
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Old Mar 20, 2006 | 10:00 PM
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with M1 5/40, very little slap
with GC, a little bit more than the M1

both have valvetrain noise......
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Old Mar 21, 2006 | 07:17 AM
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Yes it does....my piston slap went from slightly noticeable to horribly noticeable when I switched from 10w30 to 0w40. Switched back my next oil change and it returned to where it was before.
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