Mr.T
New member
Quick question...I unscrewed the filler plug on my 2012 jk rubicon and fluid came gushing out ? I'm guessing .25 quarts on the ground. How the heck would they get fluid that far over the filler plug and now do I need to drain and refill to make sure the correct amount is in there? Also the 2012 manual says 80w 90 oil, is 75w 90 alright to use. Thanks
It can get overfilled by adding oil with the Jeep on a slant, worst case is that some water got in and raised the level.
Regarding the 75w, the number before the w is the "winter", or cold viscosity. I can't remember the details, but it means the oil actually has the viscosity of a traditional 75 grade gear oil at some specified cold temperature in a standard test. The 90 number represents the viscosity at some standard normal operating temp. Bottom line is that 90 is the most important number, and 75w means it isn't as thick as an 80w in the cold. A number higher than 80w would be undesirable, but lower is better as long as other oil qualities aren't compromised in the process. I use a 75w/90 synthetic in everything that calls for 80w/90.
:beer: