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아우디 A6 수리 사례

C8 (2018-현재) · 40 TDI

2026. 7. 1. 작업

난이도 & 준비물

증상

After reading some articles regarding 'running low on oil', I understood the logic that having more (appropriate amount) of oil is better than running low as oil has time to cool down before it has to be 'used' again to cool/lubricate and what not. So my question actually is; how does it get cooled? I don't think it goes through the radiator. Does the oil just 'sit' and cools off by time? If that's the case; wouldn't driving for a long time (let's say 8 hours) cause it to only get hotter and hotter? My car stays at 90-91 degrees Celsius (Audi A6) and won't go over unless it's really a hot day

처리 내용

While cooling occurs when the oil is in the sump, cooling also occurs in other parts of the engine as well. The main purpose of oil is to lubricate, which reduces friction in the engine (other things oil does is cool, clean, protect, and cushion). Friction creates heat. Oil reduces the friction by giving two metal surfaces something to slide over so they are not in contact. This means oil gets everywhere inside the engine (where it's supposed to be, anyway ... shouldn't get in those pesky coolant passages :o). After an engine starts, the temperature of everything gets where it needs to be. The coolant temperature gets (depending on the vehicle) to around 195-210°F. This is mainly the coolant temperature. The metal around the engine can get hotter than this (depending on where it's at in the engine). The oil will also get hotter than this as well. During normal engine operation, oil should stay in the 230-260°F range . This is a lot higher than the cooling system. As oil travels through