09-23-2010, 06:51 AM
Question: have a '02 Sequoia 2WD with a 105,000 that I bought new. Have always had a shop do the rear diff oil change but just did it myself for the first time. Found in the drain plug magnet a fairly small amount of micro metal particles (like the consistency of silver model airplane paint) plus one larger piece of metal about the size of a grain of sand. Vehicle drives fine, makes no unusual sounds. Is this fairly normal to find at regular oil changes or should I not be seeing any metal "sludge" at all?
09-23-2010, 07:04 AM
What you've described is perfectly normal. Gears rubbing together will always generate powdered metal and if a gear tooth has a tiny flaw you'll get the little chips. How long has it been since it was changed last?
09-23-2010, 07:58 AM
It's been about 50,000 since the last change. I know others here do it every 30,000 but I haven't seen the need considering what Toyota's recommendations are (generally inspect, more than change depending on driving conditions) and the fact that I don't do any heavy towing, just very occasionally with a 1,500 lb tent trailer. Wanted to do it myself this time though and get it changed over to Mobil 1.
09-23-2010, 09:40 AM
In my opinion your rear differential sounds like it is in great shape. just keeping changing the fluid like you are supposed to and you should have no worries.
11-03-2010, 05:04 PM
did you add any modifier friction to the fluid? or just plain synthetic 75-140? what brand are you using?