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.
Some synthetics however will only allow a 7,500 or 8,000 mile OCI. The OCI assumes that you have a high quality fully synthetic oil in your car, which the factory oil (and that which the dealers will change your oil with) is not. My oil change cycle is 1,500, 6,000, 10,000, and then every 5,000 miles. I balance, rotate, and inspect my tires every 5,000 miles.