Prefer way of checking oil level.?

JungleB · 10-22-2009, 06:39 AM

It's easier to check when the engine is cold because the oil is thicker, which means it won't run off the dipstick making it easier to see. I'm not aware of oil expanding enough while hot to make a difference in the reading. Automatic Transmission Fluid (ATF) is a different story, check your manual on how to check that.

kannibul · 10-22-2009, 08:37 AM

Quote:

Originally Posted by JungleB

It's easier to check when the engine is cold because the oil is thicker, which means it won't run off the dipstick making it easier to see. I'm not aware of oil expanding enough while hot to make a difference in the reading. Automatic Transmission Fluid (ATF) is a different story, check your manual on how to check that.

Generally with AT fluid, check it with the car running on a level surface after the engine has warmed up.

But, check the manual just to be sure.

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10-22-2009, 06:39 AM	#1 (permalink)
JungleB Base Member Join Date: Jun 2009 Location: PA Posts: 76 Drives: 96 VW Passat GLX Rep Power: 15	It's easier to check when the engine is cold because the oil is thicker, which means it won't run off the dipstick making it easier to see. I'm not aware of oil expanding enough while hot to make a difference in the reading. Automatic Transmission Fluid (ATF) is a different story, check your manual on how to check that.