Some new vehicle manufacturers in Concord are now recommending much higher oil change intervals than they have in the past. As much as 5,000 to 8,000 miles or more. This practice came under scrutiny when four of the largest new car manufacturers announced that owners like those in Concord were experiencing engine damage resulting from these higher oil change intervals. The manufacturers' standard oil drain service for particular vehicles was scheduled at around 7,500 miles. People following these recommendations were experiencing engine damage. It turns out that oil sludge was building up. This caused small oil passages to clog and engine parts to fail. Watch this video for more details. [youtube LhDEtE8SyUg] Visit us at D&H Enterprises for your next oil change.