(Edit: Note - I no longer believe that the Mobil 1 oil filter was the cause of my start-up noise problem. Please read this entire thread to learn what I now believe the problem to be - a Toyota/Lexus VVT-i problem - e.g. Toyota/Lexus acknowledged: 'Brief Engine Knock & Rattle Noise At Cold Startup') kooter
After over 120,000 miles (and more than two dozen filter changes) I'm finished using the Mobil 1 M1-102 oil filters. I have been using the M1-102 oil filter for my 2004 3.0L V6 1MZ-FE engine beginning with the very first oil change, but no longer.
Over the last two oil & filter changes (10,000 miles over 9~10 months) I had experienced a random (maybe 3-4 times a month) valve-train clatter noise lasting a split second on cold start (after sitting 6+ hours). In all the years I have used Mobil One oil filters I had never experienced this cold start-up valve-train clatter/chatter noise before.
Well, with my last oil & filter change (about 500 miles ago) I had the cold start-up valve-train clatter/chatter noise about every-other day (3-4 times a week), which was driving me even more bonkers than before when it happened only 3-4 times a month. Something had changed... I am using the same Mobil One 0W-40 oil I've always used and the same Mobil One M1-102 oil filter I've always used. I have had no recent work on the engine, and engine performs great as always. But, why the cold start-up valve-train noise?
I replaced the Mobil 1 M1-102 oil filter with another M1-102 oil filter. I had the same problem over the following 7-10 days. I replaced the oil filter yet again with another M1-102...same exact problem. I dropped by my Toyota dealership a picked up a genuine Toyota 90915-YZZD1 oil filter and installed it - and guess what? The cold start valve-train clatter/chatter noise problem completely and totally went away! As far as I'm concerned the problem was caused by the Mobil One oil filter... Problem 'supposedly' solved.
I'm guessing that Mobil 1 (Champion) has changed the filter's anti-drain back valve (ADBV) somehow - maybe the material, thickness, size, etc. and the oil filter drains or loses oil too quickly (supposedly the ADBV is only suppose to lose between 0-3 ml of oil per hour) and now the filter is no longer able to retain an adequate amount of oil in the filter to prevent dry-starts and thus valve-train clatter noise. Another likelihood I guess could be a change they made to the filter's already loose threading (thread pitch angle) where oil is able to drain through the threading. Dunno... Don't care... But, I do know that the genuine Toyota oil filter most definitely does not produce the same valve-train noise I was experiencing with the Mobil 1 oil filters.
This has been bugging the hell out of me for a long time. I'm glad it's resolved...and I'm perfectly happy using a genuine Toyota oil filter. I just hope Mobil 1 hasn't/doesn't change their 0W-40 synthetic oil I've always used in this car (as well as many of my other cars) because I've been happy with that product from them.