Veins and Venules: Veins are the large return vessels of the body and act as the blood return counterparts of arteries. Because the arteries, arterioles, and capillaries absorb most of the force of the heartâs contractions, veins and venules are subjected to very low blood pressures.
Wondering when to change your automatic transmission fluid (ATF)? Most manufacturers recommend replacing transmission fluid every 30,000 to 60,000 miles. If you tow, or do mostly city driving with constant changes of gears, it may be wise to change your ATF even more often. Here's why. Your automatic transmission has a lot of moving parts.
Nevertheless, itâs a sensible precaution to have your automatic transmission fluid levels checked when you do it for your engine oil. Experts suggest you get your auto trans serviced at least every 15 months or 25,000km. If itâs well looked after, your automatic transmission can last well in excess of 200,000km.