Originally Posted By: crainholio
Originally Posted By: ZeeOSix
WellOiled - are you using the latest Valvoline Advanced FS with the dexos1 Gen2 (SN+) rating? My Tacoma V6 had boo-coo timing chains, so will be interesting to see how it sounds with Valvoline FS.
What kind of problem have you had with yours, and did you replace the timing chains?
My '07 4Runner noise turned out to be worn-out serpentine belt idler pulleys, even though the main timing chain was worn and elongated. The nylon guides were found to be in great condition, barely enough wear to catch a fingernail.
With the body of published documentation showing that moly is good for chains, I had avoided Valvoline previously. Good to see them adapting and I'm looking forward to reading about peoples' outcomes with it.
No problems with my 2005 Tacoma except for the left front wheel bearing going out at 45K miles. The seal was bad, which allowed water into the bearing.
The V6 has lots of timing chains, and I read that dexos1 Gen2 formulated oils are supposed to be better for reducing timing chain wear too, so if true that's a good thing.
Wonder why your chains were so stretched - what oil were you using? How many miles were on it at that point?