Simple Rainwater Harvesting Formula-For every 1â of rain and 1,000 square feet of impermeable surface (roof, driveway, etc), about 620 gallons are generated. Meaning, you can capture about .62 gallons per sq ft. To figure out the square footage of a surface, multiply the width x length.
That synthetic oil gets changed at 7,000 miles. But regular conventional oil must be changed every 3,000 miles. My local mechanic that I go to is the the most trustworthy mechanic around. I asked him what if I go 5,000 miles between oil changes.He said, you will ruin your engine eventually.ut regular conventional oil must be changed every 3,000 miles. My local mechanic that I go to is the the most trustworthy mechanic around. I asked him what if I go 5,000 miles between oil changes. He said, you will ruin your engine eventually.
Advances in oil chemistry and engine technology and an increased use of synthetic oil have lengthened oil change intervals significantly. For 2013 models, autumakers advise drivers to change their oil every 7,500, 10,000, or even 15,000 miles. The shortest oil change interval is 5,000 miles but only in some Hyundai and Kia models. However, the car service industry continues to tell customers that they need to change their oil twice as often.