What Brand of Synthetic Oil to use

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Mar 27, 2010 | 08:55 AM

#11

sbr711

Senior Member

Joined: Mar 2010

Posts: 900

Quote:

Originally Posted by mick11

I have always used Amsoil in my vehicles. never had a problem.

I only use AMSOIL (synthetic 2-stroke) in my PWC, plain old Castrol GTX white bottle 5-30 in the cars, and MOBIL-1 5-30 in wifes Sedona (same 3.5L as XG/Santa Fe)

Sep 29, 2010 | 09:34 PM

#12

chascornell

Junior Member

Joined: Jul 2010

Posts: 4

can we not use 5/w30

Will 5w30 affect the camphasers and oil control valves that are controlled by ECM?
I know 5w20 is on the oil cap but it tends to shut up the rattle on startup. Which I have been tolded by Hyundai tec is normal.

Sep 29, 2010 | 09:45 PM

#13

NovaResource

Super Moderator

Joined: May 2005

Posts: 5,297

From: Cyberspace

Using thicker oil to quiet the rattle is not fixing the problem. Keep using 5w20 and fix the rattle. It has to do with a loose timing chain tensioner. It's very common on the 3.3L and 3.8L Lambda engine. Get it fixed by the dealer under warranty. Tell them about TSB 08-EM-001-1.

More info:
https://www.hyundaiforum.com/forum/s...ead.php?t=9019
https://www.hyundaiforum.com/forum/s...ead.php?t=6621

Sep 30, 2010 | 02:54 PM

#14

chascornell

Junior Member

Joined: Jul 2010

Posts: 4

varable timing rattle

sorry the hyundi tec said the noise was normal and there are no problem with the tensioner.
Rattle ranges from 2 to 3 seconds not every time just after I drive 30 minutes or more i will drive next week to tampa from atl and when I restart after I stop after supper it will be noise. Oh! the dealership replaced my mobil 1 5w30 for there 5w20 kindell oil.