viven44 Posted August 1 Author Share Posted August 1 Then it's not fuel. "High mileage" oil doesn't really mean anything except it might have a bit more detergent to loosen up deposits. But you said your engine is clean as a whistle (as is mine, that's been in for 16 years) This is an interesting thread https://www.460ford.com/threads/oil-consumption.250503/ If it is valve guides, won't a high mileage oil or an additive help swell those up a bit ? Even at the current rate, I am not all that paranoid honestly. I ran my 84 Bronco that way for a while. Same animal. Had textbook compression but used oil. If I can reduce the consumption to quart/1000 miles that would be wonderful. I'd be as good as some of those mid-2000s Toyota Camrys Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted August 1 Share Posted August 1 This is an interesting thread https://www.460ford.com/threads/oil-consumption.250503/ If it is valve guides, won't a high mileage oil or an additive help swell those up a bit ? Even at the current rate, I am not all that paranoid honestly. I ran my 84 Bronco that way for a while. Same animal. Had textbook compression but used oil. If I can reduce the consumption to quart/1000 miles that would be wonderful. I'd be as good as some of those mid-2000s Toyota Camrys If you can show me an oil that swells brass and iron I'd be most interested. 🤔 If you're talking about the seals ON the valve guides, you may as well just pour a cup of brake fluid in there. (but know, it's going to destroy the pan, valve cover, front and rear main gaskets while it's working it's magic) Link to comment Share on other sites More sharing options...
viven44 Posted August 1 Author Share Posted August 1 If you can show me an oil that swells brass and iron I'd be most interested. 🤔 If you're talking about the seals ON the valve guides, you may as well just pour a cup of brake fluid in there. (but know, it's going to destroy the pan, valve cover, front and rear main gaskets while it's working it's magic) That’s why I like these discussions Jim. From what I can see the valve stem seals are Nylon or PTFE or Nitrile Rubber. I have no hopes of swelling it if it’s the first 2… nitrile rubber… maybe Link to comment Share on other sites More sharing options...
viven44 Posted August 1 Author Share Posted August 1 That’s why I like these discussions Jim. From what I can see the valve stem seals are Nylon or PTFE or Nitrile Rubber. I have no hopes of swelling it if it’s the first 2… nitrile rubber… maybe Here is a Cold start video after sitting for 24-48 hours. Link to comment Share on other sites More sharing options...
viven44 Posted August 1 Author Share Posted August 1 Here is a Cold start video after sitting for 24-48 hours. Here is a comparative cold start video on Big Blue 2WD (start after sitting overnight) Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted August 1 Share Posted August 1 Here is a comparative cold start video on Big Blue 2WD (start after sitting overnight) I like the blue umbrella seals. 🙂 Link to comment Share on other sites More sharing options...
viven44 Posted August 1 Author Share Posted August 1 I like the blue umbrella seals. 🙂 Jim, I don't think I have the time or willpower to do the seals.... maybe try a hail mary with a high mileage oil or a treatment first..... the bronco is also a "mall crawler" Probably a 1-2K mile/year vehicle.... if the trans or something croaks out in the future after extended use... that might be a good reason to get in and address the seals..... Link to comment Share on other sites More sharing options...
viven44 Posted August 1 Author Share Posted August 1 Jim, I don't think I have the time or willpower to do the seals.... maybe try a hail mary with a high mileage oil or a treatment first..... the bronco is also a "mall crawler" Probably a 1-2K mile/year vehicle.... if the trans or something croaks out in the future after extended use... that might be a good reason to get in and address the seals..... OK out of curiosity I found odometer reading since 1997 on source truck from TX state inspection records. No service records ever. Emissions passing up to 2009... only safety after that Odometer copy/paste below. Indicates it was used very infrequently a lot of years. Short trips. Spikes in use around 2005 when it changed ownership. 1997 - 28231 1998 - 30281 1999 - 33371 2000 - 36276 2001 - 39625 2002 - 42294 2003 - 45441 2004 - 49566 2005 - 53788 2006 - 61780 2007 - 68902 2008 - 76272 2009 - 79727 2010 - 115058 (probably error) 2011 - 81034 2012 - 82621 2013 - 83931 2014 - 86549 2016 - 89913 2017 - 90956 2018 - 91427 2019 - 92010 2020 - 92424 2021 - 92685 2022 - 93139 2023 - 93724 Link to comment Share on other sites More sharing options...
viven44 Posted August 2 Author Share Posted August 2 OK out of curiosity I found odometer reading since 1997 on source truck from TX state inspection records. No service records ever. Emissions passing up to 2009... only safety after that Odometer copy/paste below. Indicates it was used very infrequently a lot of years. Short trips. Spikes in use around 2005 when it changed ownership. 1997 - 28231 1998 - 30281 1999 - 33371 2000 - 36276 2001 - 39625 2002 - 42294 2003 - 45441 2004 - 49566 2005 - 53788 2006 - 61780 2007 - 68902 2008 - 76272 2009 - 79727 2010 - 115058 (probably error) 2011 - 81034 2012 - 82621 2013 - 83931 2014 - 86549 2016 - 89913 2017 - 90956 2018 - 91427 2019 - 92010 2020 - 92424 2021 - 92685 2022 - 93139 2023 - 93724 I think I found something interesting on the 460 Rebuild book. I dealt with valve cover bolt leaks in this build running onto the exhaust manifold side and causing smoking. The leaks didn’t quit until I used ultra black on the threads… I didn't do it on all the bolts... apparently 4 of those bolts run into the intake ports!!! I did not think about the bolts that run into the intake !!! Have I found my “Smoking gun” potentially ?? Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted August 2 Share Posted August 2 I think I found something interesting on the 460 Rebuild book. I dealt with valve cover bolt leaks in this build running onto the exhaust manifold side and causing smoking. The leaks didn’t quit until I used ultra black on the threads… I didn't do it on all the bolts... apparently 4 of those bolts run into the intake ports!!! I did not think about the bolts that run into the intake !!! Have I found my “Smoking gun” potentially ?? I would try PST. It's rated for the temp. I have OMC cast valve covers and red silicone gaskets Link to comment Share on other sites More sharing options...
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