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I'm not a transmission fluid analysis expert. These are for an Odyssey, well known for flaky transmissions. About 30,000 miles service on Honda ATF. Obviously it is due for a change, but any comments on the wear metals? METALS (D5185): Milligrams per Kilogram (PPM) Tin 1 Lead 1 Copper 8...

Anyone have web sites or info on this? I am looking to learn a bit.

I am looking for input on which of these manufacturers' engines have timing belts, if at all, (prefer classification by year) and when they should be replaced. Nissan Pathfinder Jeep Cherokee Jeep Grand Cherokee Dodge Durango Toyota 4runner Honda CR-V Honda Accord Toyota Camry

I want to hear your experiences with internal engine cleaners like those for the intake, valves, rings, etc. Any recommendations? I have some old engines with 120,000 miles and up, and want to give them a good cleaning out.

Various companies have aftermarket attachments to the engine oil filter for magnetic filtering. What are your opinions and experiences? I plan to experiment by putting on the outside of the engine oil filter some 1" rare earth magnets with backing cups to intensify the field (from Lee Valley)...

3400 km / 2125 miles on 07 Toyota Sienna using 5W30 mineral oil from factory fill and Toyota filter. Results in ppm Tin 0 Lead 1 Copper 321 Aluminum 5 Silicon 322 Iron 21 Chromium 0.6 Silver 0 Zinc 804 Magnesium 8 Nickel 0 Barium 0 Sodium 8 Calcium 1900 Vanadium 0 Phosphorus 730 Molybdenum 76...

Why not make passenger vehicles with a differential pressure indicator across the oil filter? I can't see it too expensive to put in, should be easy to tie into the CPU, and could check if the filter is in bypass. I have always wondered about this.

We have a few industrial engines that go 30,000 to 60,000 hrs before overhaul. These run 24x7, typical 70% or greater load. Think about the 'average' vehicle going 200,000 km before considered past its prime. If it averages 50 kph combined city and highway, that is only 4,000 hrs run time. If...