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| Some oil consumption actually beneficial to engines? | |
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| Tweet Topic Started: Jul 13 2015, 09:35 AM (771 Views) | |
| cwatkin | Jul 13 2015, 10:01 PM Post #16 |
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I wasn't saying using oil was a good thing. I was wondering if some use like 1/4 quart each 1000 miles might provide some level of protection. I had a real oil burner and it ran well all things considered but I replaced it before it burned a valve or experienced another type of failure. Obviously I didn't view this level of oil consumption as a good thing. Anytime I hit a headwind or an uphill grade, I could count on a massive oil fart situation. This, and the fact I was adding a quart every 100 miles was getting old. There was a time I wasn't even really stressing the engine and it started to oil fart. I just kept it floored several miles to the next exit sputtering and smoking the entire way. I pulled into a gas station was was over a quart low just from that one oil fart. I had a replacement engine sourced at this time and was pissed at this one so decided to really flog it. Then, I would pull up at friend's houses and just floor it to announce myself with a massive cloud of blue smoke. Those "rollin' coal" diesel trucks didn't have anything on my Geo! Somehow through all of this the car was still getting 50+ mpg and running with decent performance except when sputtering during an oil fart. Someone told me that all the oil in the upper cylinders was likely helping to form a seal and act like a wet compression test. Either way, I didn't see this as a good thing and swapped engines at my first opportunity. That replacement engine is still in the car and doesn't use any oil between changes so I am happy. I do use the car for work and run a European synthetic but don't run extreme amounts of mileage to where I wear out an engine in 3-5 years. We will see how long this one lasts. Conor |
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| punkozuna | Jul 13 2015, 10:55 PM Post #17 |
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High oil consumption due to extreme cross-hatching to try and get more oil on the cylinder walls MIGHT be a good thing. High oil consumption due to leaks, worn oil scraper rings and worn valve guides/seals isn't. Conventional wisdom used to be that engines built with loose clearances made good power early in their life cycle because they had lower friction but that they would wear out sooner. Now people are theorizing that loose engines last longer because more oil is being flung around to where it will do more good in preventing wear. Which is right? Is either right? Manufacturers claiming that high oil consumption is normal sounds like a B.S. excuse to try and avoid fixing defective products. Audi has settled a class action lawsuit. Subaru admits high oil consumption but claims it is in less than 1% of their cars (that's still a lot of cars). BMW says using oil is normal and blames more frequent oil top-offs on longer oil change intervals. High oil consumtpion story. Should I complain if I buy a new BMW and it doesn't burn enough oil? |
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| ZXTjato | Jul 13 2015, 11:00 PM Post #18 |
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bass heads
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personaly if i bought a new car i wouldnt want it to burn any oil at least untill ive spanked it for a few hundred K miles |
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7:36 PM Jul 10