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Fuel and Oil Additives

1246 messages,  Last post on Sep 28, 2009 at 7:37 AM

You are in the Maintenance & Repair Forum. Your Host is mr_shiftright

What is this discussion about? Fuel System, Engine, Fuel System, Oil, Diesel, Fuel Efficiency (MPG)

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#1240 of 1246 Re: 'zddplus' is an additive [euphonium] by Mr_Shiftright HOST Jul 02, 2009 (5:07 pm)
Replying to: euphonium (Jul 02, 2009 9:49 am) I've been on the ZDDPlus website and I've digested what they say and my conclusion is that no engine running on the street needs any more Phos or Zinc that you can get with heavy duty modern oils. The assertion that older engines are failing due to a lack of ZDD in modern oils is without hard evidence and highly unlikely. Maybe vintage drag racers, pro street cars, etc. could claim this, (presuming they all haven't gone to roller cams) but not any vintage car in normal street use IMO. And given the stresses of racing, who's to say exactly what happened?   Anyway, you want peace of mind? You can just use SJ or SL, plus CH-4, type oils. That's all you'll ever need IMO.   Here's a nice list I found:      1. Castrol RX Super 15w40    2. Chevron Delo 400 15w40    3. Mobil Delvac 1300 Super 15w40    4. Pennzoil Long-Life 15w40    5. Quaker State 4X4 Synthetic Blend 15w40    6. Shell Rotella-T 15w40    7. SuperTech 2000 (WalMart) 15w40    8. Valvoline All Fleet 15w40    9. Castrol Syntec Blend Truck and 4X4 15w40   I believe ZDDPlus has everything in it they claim it has, so it is not being misrepresented as per content (which is what their "lab tests" are saying---not that it "works").   But it looks to me, from what I've been reading, that ZDDPlus is a cure in search of a problem.   I don't have to prove that ZDDPlus prevents flat tappet wear---THEY have to prove that modern oils cause it --- and they haven't. Their ads are full of "argument by assertion", which claims that lots of flat tappet engines are showing wear, but wear is the evidence?   NADA. I'm ready to see it, bring it on. I want bench-tested vintage engines, side by side, newly rebuilt, 10 with regular modern oil, 10 with ZDDPlus, run 'em for 50000 miles and show me.   Replies to this message: mpcross (Sep 26, 2009 12:23 pm)
#1241 of 1246 oil analysis by kurtamaxxxguy Sep 25, 2009 (5:17 pm)
An analysis of engine oil in my XT Forester at 3000 miles revealed the main additives were calcium, phosphorus, zinc, and molybdenum. A tiny bit of boron, silicon and iron were also there. Everything else in trace amounts.   The oil is Chevron 5w30 (I do not know AP rating but assume it's match for the Turbo engine as Subaru recommended it). Only additive is ASL Camguard.   Happily, the oil had little soot and no water/gas contamination. I did the analysis because some folks have had major XT engine failure around this mileage - this engine seems ok. Replies to this message: Mr_Shiftright (Sep 26, 2009 7:12 am) kurtamaxxxguy (Sep 27, 2009 9:54 pm) Mr_Shiftright (Sep 28, 2009 7:37 am)
#1242 of 1246 Re: oil analysis [kurtamaxxxguy] by Mr_Shiftright HOST Sep 26, 2009 (7:12 am)
Replying to: kurtamaxxxguy (Sep 25, 2009 5:17 pm) What was the nature of the engine failures you heard about? Replies to this message: kurtamaxxxguy (Sep 27, 2009 9:54 pm) Mr_Shiftright (Sep 28, 2009 7:37 am)
#1243 of 1246 Re: 'zddplus' is an additive [Mr_Shiftright] by mpcross Sep 26, 2009 (12:23 pm)
Replying to: Mr_Shiftright (Jul 02, 2009 5:07 pm) I Have to agree with Mr.Shriftright for about 99%. I always hold out hope that there will be something that comes along to make an engine last almost forever. Part of my wish came along with Syn oils,better filters/filter systems, and maybe someday a pour in can of "forever engine life" zero wear for 80 years!!!    Most of us know the additives,for all intent will not get you much and if they did then why use oil,Put in one can STP,Prolong,Z-Max, Teflon junk?,one can of whatever Wal-Mart has on the Red tag close out,and just a touch of Marvel mystery oil,Weld her shut and Drive anyway you want,it just won't wear out or break!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!- - !!!!!!!!!!!!!!!!!!!!!!!!   Always research,get the facts,then look for double blind tests,and when you find them,see what Governmental agency recommends them and you just might have something there! Good luck Guys with additives, Mike C
#1244 of 1246 Long time coming by mpcross Sep 26, 2009 (1:02 pm)
Hey Guys, This is a long thread,since Sept. 01 Need a cake with a burning bottle of fuel additive on top!!!!!!!!!! MC
#1245 of 1246 Re: oil analysis [Mr_Shiftright] by kurtamaxxxguy Sep 27, 2009 (9:54 pm)
Replying to: Mr_Shiftright (Sep 26, 2009 7:12 am) '09 XT's have had random bearing failure anywhere from 1-2K to 13K miles. There was one recall early in the '09 model year, then various reports on Subaru forums.   Seemed prudent to check the oil at least once just to be sure. Replies to this message: Mr_Shiftright (Sep 28, 2009 7:37 am)
#1246 of 1246 Re: oil analysis [kurtamaxxxguy] by Mr_Shiftright HOST Sep 28, 2009 (7:37 am)
Replying to: kurtamaxxxguy (Sep 27, 2009 9:54 pm) arg...that sounds bad. I guess if it's random bearing failure then checking the oil won't much matter---usually bearing failure is an oil starvation issue--like a plugged oil galley. I suppose a new engine could burn up all its oil, but one would think the driver would notice those clouds of blue smoke. But maybe not.

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