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Originally Posted By: benjamming What lab did the analysis? TAN result? Do you have any way of knowing the age of the fluid that was used for this fill? Fluid age was 25 months, about 30,000 miles. No TAN test done but can be requested.

Last service was the dealer's "drain & flush" but don't know if it was full capacity. Thanks for the other advice. I was considering Amsoil synth ATF and do a few drain and fills for the first while to get out the old residue. Any comments on this DIY job vs. a full capacity change out at a...

Thanks Critic for the replies. Yes, it was a very light brown, not heavy. I did a white card blotter and there is minor staining. Already checked into the belt, w/p and plugs. They need replacement and budgeted for that already.

The last change was about 30,000 miles ago. I don't own it but checking it out. I agree, 127k on the original is amazing. I noticed no tow hitch on it. It looks like the owners generally stuck with dealership service recommendations.

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...

Ah-ha! I thought that looked more like a 20 wt. Next UOA should more typical of 5W30. Thanks for the confirmation.

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

Has anyone tried Seafoam for the intake and top end, and Auto-RX for the bottom end, on a sludgy/varnish engine over 100,000 miles?

I will do some experiments and see what happens.

Found this on the web for Toyota Model Year Engine Belt/Chain/Gear 4Runner 1990-2000 4 Cylinder Chain 1990-2002 V6 Belt 2003-2007 V6 Chain 2003-2007 V8 Belt Avalon 1995-2003 V6 Belt 2004-2007 V6 Chain Camry 1990-2001 All Belt 2002-2008 4 Cylinder Chain 1990-2006 V6 Belt 2007-2008 V6...

That precisely is the problem. These are engines other people owned and they did not always do so. Some have signs of light varnish under the valve covers, others show traces of sludging/varnish. I have found posting about Auto-Rx as the slow and easy approach for cleaning up the lube channels...

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.

You are right, what is in the reservoir gets sucked back in. He is full of baloney.

Focus on fluids and parts that fatigue from fluids! Change coolant more often than recommended and don't believe long-life lasts 5 years or +100k. Every 3 years best. Check hoses and thermostat at same time. Good quality oil and filter always with a UOA once a year minimum to look for...

Here are conclusions from a research paper I got from 1995: 1. Lube temp on the bearing surface varies in proportion with feed oil temp (test engine showed rod bearing temp was 5 to 10C higher than oil temperature) 2. Temperature difference between bearing surface and feed oil is almost...

Forgot to mention that fuel dilution could result from rings seating. Cr wear probably from ring lapping so once seated, should see less FD.

No lab comments other than stated earlier. I do not know what brand oil the factory uses (maybe a 20 wt?) but the dealer uses a 5W30 with a kV of 10.7 cst at 100C. Next UOA will confirm fuel dilution. I wonder if this was caused at first start and tuning of the system since it could have been...

Came across this site with a good summary for industrial applications http://www.magnom.com/index.php/tech/ferrousproblems/

If you know someone with factory manuals they can check what sealant is used during assembly. What was your copper like?