Jun 8, 2023 · Although 5w40 is not as widely used as 0w20, it is engineered to protect the engine against sludge buildup, deposits, and damage. Some users prefer 5w40 because it is less expensive and readily available compared to 0w20 synthetic oil. 0w20, on the other hand, is gaining popularity as it is increasingly being used in both new and existing vehicles.
Apr 26, 2017 · As others have said, this should be fine in your Focus. I would point out though that Ford specifies 5w-20 meeting WSS-M2C945A. 0w-20s would be the wrong viscosity and would meet WSS-M2C947A instead. While pretty unlikely, it would be possible for a dealer to be difficult on a warranty claim as the specified oil wasn't used.
Aug 7, 2023 · Using this oil in a vehicle can potentially increase fuel efficiency too. Such is the capacity of the 5W-30 engine oils. As for what 5W-30 means, the '5' represents the viscosity of the oil at lower temperatures ie. '5' degrees Celsius. It has been stated that the more this number decreases, the better a vehicle can conduct a cold start.Oct 14, 2022 · Note: As 0w20 is synthetic oil, try to use 5w30 synthetic engine oil to avoid any kind of issue. Can I use 5w40 instead of 5W-30 for BMW? BMW says you can use an: 0w40, 0w30, 5w30 or a 5w40 LL-1 oil in the USA. Btw… you can also use a LL-4 rated oil where a LL-1 oil is spec’d, but not vice versa!
