View Poll Results: Which is better for noise level and protection for LS1 piston slap

Amsoil 5W40 euro.

48.81%

German Made Castrol Syn. 0W30

51.19%

Voters: 84. You may not vote on this poll

Poll. Amsoil vs. castrol syntec

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Aug 20, 2005 | 01:16 PM

narc

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Poll. Amsoil vs. castrol syntec

Although i have heard that both Amsoil 5W40 euro. and german made Castrol Syntec 0W30 (M0501) are great oils and that they help reduce piston slap noise i would like to have a poll on which you prefer. I have a bad case of piston slap and i would like to know what you all think is better for it and its noise.

I quess im asking which is better for protection and noise level on a motor with piston slap

1 = Amsoil
2 = Castrol

Aug 20, 2005 | 03:09 PM

JayLS1-327

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From: Brewster, NY

I'm really happy with my Amsoil system 2000 0W-30. It's quiet, and consumption is down. I have not run an analysis.

https://www.amsoil.com/storefront/tso.aspx

Aug 20, 2005 | 08:26 PM

tirefryer

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From: New Jersey

My piston slap was really noticable on cold starts and warm restarts with the GC 0W30. I just switched last weekend to the Amsoil 5W40 and on cold start the piston slap is almost totally gone. It is very slight. On warm restarts it is stil noticable but does not do it as long as the GC did. I would highly recomend switching to the Amsoil 5W40 to quiet the motor, plus it has a higher HTHS of 4.2 which will protect better when you are beeting on her.

Aug 21, 2005 | 12:21 AM

seabirdak

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Come on now Amsoil all the way, it's been proven... but whats up with all the funky number weights?

Aug 21, 2005 | 12:59 AM

$00T\A's Avatar$

00T\A

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From: NW Houston,TX

No brainer Amsoil

Aug 21, 2005 | 09:20 AM

mr2guru

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From: Kansas City Area

Amsoil>*

Aug 21, 2005 | 08:26 PM

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From: pensacola fl

i voted castrol, its what i use in my Z.
good things about 5w40 mobil 1. i use it in my HD. changed over from havoline dino oil and there is absolutely no valvetrain noise on startup, or piston slap on my 6.0.
i think i will be using the 5w40 mobil 1 in the car if i cant find the 0w30 castrol.

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Aug 22, 2005 | 10:00 AM

narc

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i figure id run 6 qts of amsoil 5(or 10?which one?)W40 and a longer Acdelco PF-49 filter

sound right? now where to get Amsoil? can i get it locally?

Aug 22, 2005 | 03:27 PM

#10

tirefryer

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From: New Jersey

You can get it from the sponsors. Or just order it off there web site you get the same price. I would go with the 5W40 as i did, but i do get cold winters here. If the car was never going to see cold temps. I would run the 10W40. Also use the longer K&N filter HP2006, it is a better filter and it flows much better than the AC Delco. And run 6 quarts with the longer filter.

Aug 23, 2005 | 10:33 AM

#11

Tranzor

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From: Kent WA

Quote:

Originally Posted by narc

sounds like amsoil 5W40 is the way to go huh..where can i find it

and how many qts are you guys running (5.5?)

If you PM me with your zip code and the quantity you want (6 quarts, 1 case, etc) I can give you a price quote. I'm an independent Amsoil dealer and I give the best price I possibly can for fellow LS1TECH members... price is discounted enough that I can't advertise it openly, so PMs or emails only.

Jason

Oct 8, 2007 | 07:47 PM

#12

87gnx

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From: house near beach

Amsoil without a doubt!! Read some on my web site at www.synthetic-oil-tech.com/1262175.Your welcome to purchase there also.
Thanks; Randy

Oct 9, 2007 | 09:03 AM

#13

ssracer8

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From: St. Paul, MN

I've always had good luck with Amsoil.

Oct 9, 2007 | 10:50 AM

#14

SS101

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y 5W40 and not 0W30 or some such closer to OEM spec viscosity???

Oct 9, 2007 | 12:50 PM

#15

TXZ28LS1

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From: Classified

im running the CASTROL SYNTEC 5W-40!! it kicks ***!! no oil consumption, good oil pressure!! also my buddy said that the oil looked brand new when i changed it at a 4k interval!! good stuff!!

Oct 9, 2007 | 01:30 PM

#16

camaro_rs350

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From: pacifica ca

AMS oil fo sho

Oct 10, 2007 | 12:54 AM

#17

pdd

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From: dudley mass

Quote:

Originally Posted by ssracer8

I've always had good luck with Amsoil.

sweet 60's camaro ssracer

Oct 10, 2007 | 01:21 PM

#18

rk_2000_Z/28

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From: Enid, OK

I voted for Amsoil (even though I use Royal Purple)

Here is an interesting thread for you to read

http://www.moddedmustangs.com/forums...ight=synthetic

Be sure and read the link in the second post if you have time. That's what I found interesting.