Originally Posted by Railrust
Originally Posted by y_p_w
Originally Posted by Railrust
Honestly, is there any oil that sludges nowadays? The only sludge I've seen is from neglect or an engine that overheated because of cooling system problems.
Honda VCM V6s back when they were recommending 5W-20. Many were following the oil-life monitor using API SM 5W-20 and finding drivability issues from the sludge. Looked like this:
Interesting I have a 2004 Odyssey V6 engine on a stand (we removed it last week). We took it all apart - van had 220,000 miles - it was donated because the engine's water pump seized. The undersides of the Pistons had a lot of carbon under them, the oil control rings were full of soot, but under the valve covers were pretty fine.
I don't know if the oil rings got like that because the engine may have overheated or what? But it was bad.
In all honesty though, I have never seen a sludged up Honda engine. I've seen carbon in the EGR tubes and just what I saw on this engine. Didn't realize they have had sludge problems do to extended drains on 0w20.
I never heard of sludging problems on 0W-20. It was pretty much on conventional 5W-20.