Let me run something by you. UOA of an oil analysis shows 2.4% fuel dilution. Let’s do the math. 6 quarts at 32 ounces a quart equals 192 ounces. 2.4% of that is 4.61 ounces of gasoline in the oil. That’s 14.4% of a quart. That boys is a bunch. Hold that thought. ASTM D86 is the gold standard for gasoline distillation. The typical 87 Octane E10 gasoline has an endpoint of 400F. Roughly 82 F below the NOACK test temperature. The 60% distilled has a temperature of about 230 F. Hold that thought as well. I’ve run a few thousand D86 distillations. A NOACK test for Red Line 0W20 at 482 F, the ASTM standard is 9%. Let’s do the math. 192 ounces (six quarts) = 17.28 ounces or a tad over half a quart. Last piece of the puzzle. At 5,000 miles the dipstick shows no gain, no loss. Question??? How do you burn off 9% of the lightest components of a motor oil which are much heavier than the heaviest components of gasoline and manage not to vaporize the gasoline so that you have a 2.4% residual OR how do you manage to burn off the light ends of the heavier fluid and yet retain 2.4% of the lighter components? OR how do you manage a zero net volume change by adding 2.4% to your volume? Are you as confused as I? The obvious answer is the sump temperature is below the 50% of the D86 in which case there is no loss of light ends of the lubricant but in that case the oil level would be 5 ounces higher than the charge volume. Yes I am aware of the rules of partial pressures but this lies outside that bound. By what wizardry to we claim a half a quart in 5,000 miles is a result of NOACK volatility (a common belief) and still show 2.4% fuel dilution by GC method with zero net change in volume? My seventh grade math teacher taught us that the first rule of a double check of our figures is….is the result logical?
Boys, ones got nothing to do with the other. Points and condensers? Sure solid state is better. That said solid state made like junk is still junk in which case points and condensers wins. I really dislike it when someone pees down my leg and claims its raining, don't you? Blanket statements stink. Doug you know what Jsdirt is talking about. Why make it difficult? I rarely agree with him but on this point....brothers got a point. AMF isn't junk because it's AFM but because it is made poorly. Or was. Jury is out on the 2014 and newer "new and improved" to acquire enough miles to show us what's what. Patients grasshopper. Patients. Jsdirt...dude...take a breath so we all can breath.
I'm standing in Lowes holding a flush valve lever. Fella asked "You what I was looking for?" "No", I reply, "but I found what you have". I explain that for the first fifteen years of my life I hand no idea what this thing was. For the Next thirty years I installed ONE. Since then I replace them about every FOUR months. They cost half as much but break thirty times more often. I get ya Jsdirt
Matt 6:19 “Stop storing up for yourselves treasures on the earth, where moth and rust consume and where thieves break in and steal. 31 pages on this topic reduced. You can slow it. You can't stop it. Nature is always trying to reduce things to their lowest state of energy. The only real question is how much time and energy do you wish to deploy? Anyone try Cosmoline? https://www.cosmolinedirect.com/cosmoline-rp-342-heavy-spray-military-grade-rust-preventive/
Lubrication! It's more than what oil you use or how often you change it. The oil is subject to the motors state of tune as well as heat and load. Stuck lifters, stuck rings, these are lubrication issues not metallurgy or design issues. For the most part. Yes, mechanicals fail to load stresses or poor designs as well but even a crappy design operating within it's limits is a life time event. It isn't always obvious.
Dyson report came today. First oil analysis I've ever had done. Maybe I mentioned that...or not. All we really have at this point is one data point and a few things to watch that all seemed to be linked together. Basic feel is good but can be improved. Biggest thing I learned was the effect the state of motor tune can have on the level of stress on the oil. While that sounds self evident what isn't, is the fact that the motor can be running fine, scope looks good and she's giving no tells and yet....something is amiss a professional can ferret out. As anal as my program is...it's needs to get tougher. So be it. What great service Dyson gives.
85% of all serial killers chew Bazooka Joe. Should I assume Bazooka Joe is what causes people to become serial killers? Correlation is not Causation. If AFM was the cause of lifter failure or ring failure wouldn't the majority of all AFM motors fail. Do they?
10/16/2018 "Pepper" - 2015 Silverado 1500 4.3 Ecotec3 6 quarts Red Line High Performance 0W20 WIX filter WL10255 80,000 miles 5,000 Interval (33% OLM) Sample sent off to Dyson for UOA. Never done this before. (Thanks Nick!)
There is a motor whose oil was not changed nearly often enough. I would have loved to see the valve cover off this motor before cleaning: or oil pan. Bet it looked like the TB before spray and several times thicker. Think he's one of the crowd that uses Kum & Go / Quick Trip / 7-11 30W and toilet paper cartridge filters on 20K intervals?
I started using Red Line about 1998 when I bought the first Civic. Mobil 1 before that for maybe eight to ten years? I still use Quaker State UD in my 'salt cars' and garage queens that see 3K service a year and 2X changes. Except long term storage. Then still Red Line. Remember NOACK is a 482 F test for an HOUR. Bearing temperatures are about 75 F over you sump oil temperature. Pistons today often have oil spray cooing. Cams are rollers. blocks and heads alloy. Cooling systems large. Not much to get that hot in a normally asperated motor anymore. Coolers for all those before the modern period. 212F has been my hard sump ceiling for 40 years. Mid to upper 190's preferred. I am mystified by GM's use of 207 F thermostats in Ecotec3 motors whose lubrication cooling is carried out in large part by the radiator and hindered by less than useless thermostat deployment. Especially since in their own upper tier vehicles those same motors sill have 182 F Thermostats in them. So it isn't for emissions is it? Now all that said. A low NOACK doesn't hurt a thing.
Three Civics running. Two bought new and the third my sister-in-laws car she bought new we took over payments on. @ 650,000 miles between the lot of them and not a drop between 1997 and today. 80K on the Silverado and none used there either. 87 5.0 Mustang used none. Beat that one like a pup. 76 Corvette L48 none. Bought used with 60K on the clock. 09 Buick 3800 zip. Wife's Terrain nada. Her Buick 2.4, nope. 76 Caprice wagon...no way. 76 Ford 351 W not a drop. 72 ACM 232 no joy. I'm loosing track Two mid 60's Mustangs with 200 sixes. One leaked oil to bad to tell but to old when bought to fix. Main seal. The other used nil but was changed every 2K so hard to tell. None within 2,000 though. 64 Malibu 283 I bought with about 130K on the clock. Now that one used oil. A quart per tank. Leaked trans fluid and took a band adjustment once a week. It was a pretty car. 65 Ford 352 would throw off the first quart of it's six and then not a drop afterward. Second 352 used none between 2 K changes and you had to tap the oil pressure gauge to make sure it was working. Bad cam bearings. Used car. Toyota Peso bought new used about a quart in 1,000 starting around 100K but ran to 300K. Never did smoke. Pennzoil motor. It was the only motor we had that used oil that we bought new and the only motor that ever ran Pennzoil. (Pre Shell). Only car in five plus decades of driving and maintaining bought new that ever did use any oil at all. Most of my used cars were not offenders but the ones that were....beat....overheated and miss used silly cars before I bought them. I knew it when I did. Rebuilt them or sold for part for more than the buy price. There's a few more but none that used. 72 Toyota. 2 actually now that I think of it. One had a 22R...nice motor Bikes to many to count. Two used a bit of oil. Both pre 60 Brit twins beat to death when I got them. One Honda CB 600 that leaked something awful. No history. Bought and sold in a month. 50's 500 Royal Enfield used oil silly until I fixed the PCV system then a few ounces between changes. Never enough to 'top off'. 90% of my bikes were oil tight and used none. Almost all were bought new or very low mile uints where I knew and rode with the owners. Oh, the 76 Superglide used oil like I owned an oil well. Literally the AMF Strike year bike. Bought new. Bike delivered with faulty oil rings, warped valves and missing third gear shift fork. Use none after the rebuild.
Grumpy Bear replied to Nitrousbird's topic in 2014 - 2018 Chevy Silverado & GMC SierraYou make me smile Stan. Great advise as usual.
Grumpy Bear replied to Gorehamj's topic in The NewsroomSeriously?!?! This post got zero response? Lord people have short memories. A once upon a time standard. This is going backward and all it took was time for people to forget so that they now pay for what they should expect as REASONABLE. What's average? $50K. I do 36,000 miles a year. Is GM telling us we need to hand them our bank book cart blanc once a year? Well SnakeEye...I for one remember quite well. Listen to yourselves. People whose parents are not old enough to remember the 60's offer 'proof' that 100K was the limit for power trains then are now willing to accept the risk of 1/3 that distance at twenty times the price.
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