What is the difference between gravity oil change and machine circulation oil change?
1 Answers
Gravity oil change involves directly opening the drain plug to release the transmission oil, and then adding new transmission oil. Machine circulation oil change involves adding new transmission oil into the circulation machine, which then flushes out the old oil from the transmission. Using a circulation machine requires more new transmission oil and is also more expensive. More details are as follows: 1. Differences in operation and quantity. Firstly, the gravity method of oil change is relatively simple. Most automatic transmissions have an oil port that can be used for draining oil, checking oil level, or changing oil. The circulation method of oil change is similar to the steps of changing engine oil, but slightly more complex. 2. Differences in effect. Using the circulation method not only changes the oil more thoroughly, but the circulation machine also drives the flow of old oil, which can to some extent help remove iron filings and dirt remaining in the oil passages and chambers along with the oil.