| Author | Message | ||
| califbob (209.86.10.243) Rating: N/A |
At one time I was a private pilot. We used re claimed oil in all our planes. Has any one had any expriance with this stuff in a DD,671 to be specific? | ||
| Deacon (150.199.209.37) Rating: N/A |
First time I ever heard of useing it in an airplane, wouldn't be my idea of safty. Anyhow, many moons ago it was common to find reclaimed oil as older motors had more clearance on bearings than moderm motors do. We would use oil engine oil by filtering it well through raggs. But then the average life span of a gas engine was around 60,000 miles! Personally I would not do it. What I did do to extend oil life was to change the oil filter at lower intervals and have an oil sample run, the result was triple the oil life which in a 318 hp DD was eleven gallon per change. | ||
| BrianMCI96A3 (65.173.87.107) Rating: N/A |
I'm with Deacon, reclaimed oil in an airplane? If ever there was a place to use only the best lubricants it's in an airplane...you don't get to pull over to the side of the road when your engine siezes up. Reclaimed oil is just a bad idea, a good idea to save money on oil changes is to copy Deacon's strategy, sample your oil and change your filters. Brian | ||
| Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)
Rating: N/A |
Actually for a long time ALL motor oil designed specifically for airplane use was manufactured using reclaimed or reused stocks. This was because the oil would go thru the refining process twice and was considered superior to oils that were "virgin". ...And...then there was the old chevy pickup I owned that actually got worse oil mileage than gas mileage. I used drain oil stolen from the ... ...gas station I worked at. The rings/guides were totally gone. One could certainly use recycled/rerefined oil but today could one... ...even find such? Your 2-stroke Detroit will love good old Delo 100 40 weight if you can find a supplier. Good luck.  | ||
| sam phillips (209.82.161.161)
Rating: N/A |
Henry your post made me wonder how old you are as I have almost 50 years in aircraft maint. and have never seen recyled oil used. When did they use it? At my age I have learned anything is possible. Just curious | ||
| califbob (209.86.10.180) Rating: N/A |
I don't know about know but at one time Greyhound used reclaimed oil. The went through 1000s of gallons of oil and had their own reclaming plant. Evergreen is a huge outfit that is in the reclaming business here in Calif. When I was flying every FBO on the field used reclaimed oil. I frankly can't see the problem. Like Henry said it's refined used then refined again | ||
| BrianMCI96A3 (65.41.212.58) Rating: N/A |
Re-claimed oil is not the same beast as re-refined oil. Refined oil creates a base oil to which additives are added for specific use. Re-claimed oil creates a product which is dried, filtered etc. and to which base oil is added to bring it up to a certain standard. I personally won't use reclaimed oil, and like I said oil sampling is the way to save money, not reclaimed oil, to my way of thinking. Brian | ||
| Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)
Rating: N/A |
For years Shell 100 50 weight we used in the cropdusters was re-refined/recycled oil. I'm sure you have used it also. My dad (who goes WAY back) explained all this to me years ago. It is possible were are assuming different definitions as to how a oil gets to be aero oil. I am 55. My dad is 81. He learned to fly in the late '30's and according to him, crashed his... ...first airplane before he owned his first car. Anyway, the stories he has told. He he. | ||
| Marc Bourget (209.142.38.81) Rating: N/A |
Oil contains various fractions, some of which break down from heat and wear sooner than others. "Synthetic" oil is simply a process that replicates the better fractions. The better fractions don't "break down" at temps approaching 800 deg. IIRC. I interpret that the "reclaimed" or "recycled" oil would take the "surviving" fractions, i.e. the better or best fractions and re-use them. Good theory, I've been flying since the late 60's and spoke with many an A&E but never heard of this practice. Onward and Upward Marc Bourget |