Hidiety Posted October 5, 2020 Report Share Posted October 5, 2020 So I currently have the valve covers off to replace the gasket. I noticed a marked difference in the color of the parts under the front cover and the rear cover. I'll attach images. The front looks mostly clean, and has a pretty healthy coat of oil. The rear however is a red / brown color all over, and the amount of oil in there is sparse. There is some oil present but I wouldn't call it an adequate amount, it's pretty dry. My concern is that I have a blockage in an oil line to the rear valves. I'm not an engine expert by any means, but have a basic understanding of things. I know enough to know things in the rear are getting pretty cooked though. Where should I start to diagnose the issue here? 2late4u 1 Quote Link to comment Share on other sites More sharing options...
John/Horace Posted October 6, 2020 Report Share Posted October 6, 2020 Welcome to the site! I’m not an expert either, free advice is worth everything you pay for it. There are passages called oil galleys in all engines. Sometimes when they are designed too narrow they can start to sludge up and partly restrict adequate oil flow. The galleys being narrow as a design flaw has occurred on a few engine like the Chrysler 2.7 v6 (actually a mitsubishi design IIRCC) and the older Toyota v6 from a decade ago. People who used synthetic oil or over changed Dino oil never had issues. Others not so lucky. Mt brothers Chrysler 300 with a 3.5 was driven to wreckers with over 200k miles and no engines issues. Lots of body rust and assorted : other suspension issues exceeded car repair value. He is a person who barely does his maint, so I think the 3.5 is a tough engine. There are engine flush products on the market that you could try to see if they help oil flow inside the engine. Follow instructions closely, you damage engine if you don’t. Testing oil pressure if it’s not showing on your gauge cluster might be helpful. Oil pump pickup in pan has a screen that can start to get gummed up. Quote Link to comment Share on other sites More sharing options...
Hidiety Posted October 6, 2020 Author Report Share Posted October 6, 2020 (edited) I'm going to try marvel mystery oil tonight. Internet says it's pretty good and will hopefully clear it out. Sounds like I should drop the oil pan too though, and make sure there aren't any blockages there. As far as oil pressure goes, there is no gauge on the dash. However I haven't had the warning light come on either. Edited October 6, 2020 by Hidiety Added info Quote Link to comment Share on other sites More sharing options...
Hidiety Posted October 6, 2020 Author Report Share Posted October 6, 2020 The oil I use is Castrol GTX High Mileage full synthetic. Quote Link to comment Share on other sites More sharing options...
2late4u Posted October 6, 2020 Report Share Posted October 6, 2020 would be interesting to see pictures after you use the marvel mystery oil Quote Link to comment Share on other sites More sharing options...
Hidiety Posted October 6, 2020 Author Report Share Posted October 6, 2020 19 minutes ago, 2late4u said: would be interesting to see pictures after you use the marvel mystery oil A pic of the rockers and such? Quote Link to comment Share on other sites More sharing options...
2late4u Posted October 6, 2020 Report Share Posted October 6, 2020 11 hours ago, Hidiety said: A pic of the rockers and such? yes to see how the MMO works, of course that would be a lot of work just to see how or if it worked. i guess Quote Link to comment Share on other sites More sharing options...
Hidiety Posted October 6, 2020 Author Report Share Posted October 6, 2020 A bit rough to get to. But if I get bored next weekend I'll see what happens. Quote Link to comment Share on other sites More sharing options...
John/Horace Posted October 6, 2020 Report Share Posted October 6, 2020 I’m not a huge snake oil believer. But I have seen it unstick a lifter and fix a few other minor things before. I like Casteol oil, they have good products. Are you the original owner and was it Castrol syn from new ? 2late4u 1 Quote Link to comment Share on other sites More sharing options...
Hidiety Posted October 6, 2020 Author Report Share Posted October 6, 2020 5 minutes ago, John/Horace said: I’m not a huge snake oil believer. But I have seen it unstick a lifter and fix a few other minor things before. I like Casteol oil, they have good products. Are you the original owner and was it Castrol syn from new ? I am not the original owner. I think its has had 2 owners prior to me. I have used only that oil in it since I bought it though. Quote Link to comment Share on other sites More sharing options...
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