Is 0W 20 Oil Too Thin?

Answer: Yes, 0W-20 is unquestionably safe for your engine. Manufacturers have been specifying 5W-20 and 0W-20 since the early part of the last decade and there is no evidence whatsoever that engine wear rates have increased.

Is 0W 20 thicker than 5w30?

Differences between 0w20 and 5w30 engine oils

The operating temperature range for 5w30 oil is significantly wider than for 0w20.

What happens if engine oil is too thin?

Oil that's too thin can fail to develop a consistent lubricating film, inviting metal-to-metal contact that causes wear. Extreme stress and heat add to the challenge. Since oil thins as it's heated, the already-too-thin oil becomes even thinner under extreme heat, worsening the problem.