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Message: <blockquote data-quote="bal3056" data-source="post: 175471" data-attributes="member: 584">For 35 years, have been playing cars with auto trans ( I love autos) including tricking up these autos and there is only one way to check ATF oil which has never ever failed  .....  drive car for 15mins as this will ensure the auto trans gets hot reaching its own operating temp.   The engine operating temp does not mean the trans is also equally hot. Eg., you start the engine first thing in the morning and allow it to idle for 10 mins and engine would have reached operating temp from the temp meter indicator, but during this idling time, the trans is still in P or N and the ATF hasn't had a chance to get hot (just warm only) and to flow to all the nooks n crannies of the trans and also with no shifting during the idling time.  All these will not give you accurate reading. Hence the reason for actually driving the car before ATF level can be checked. In short, drive car for at least 15 mins or more, then stop car, pull handbrake and put gear in P or N. Take out dipstick, wipe with lint-free cloth, insert the dipstick into tube wait for 3-5 secs, pull it out and check level. Top up to required level if necessary. Simple as that!!.</blockquote>