I realize it is a closed system. But is there anyway to check the transmission fluid level. I unscrewed the cap which under the hood and the reservoir looks empty, should I be able to see transmission fluid? Vehicle is an Automatic Trans
Joined Apr 14, 2012
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Joined Jun 12, 2017
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Joined Jun 19, 2017
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Shouldn't there be a dipstick? I thought auto's always had one. Mine is manual so don't have anything to go off of. Sent from my SM-G935V using Tapatalk
Joined Jun 12, 2017
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6 Posts
Discussion Starter · #5 · Jul 13, 2017
Shouldn't there be a dipstick? I thought auto's always had one. Mine is manual so don't have anything to go off of. Sent from my SM-G935V using Tapatalk
Nope, no dipstick on some of the AT. It is a 2012 LTZ.
Joined Apr 14, 2012
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17,979 Posts
No dipstick, and not common since 5-speed ATs left market. The check procedure involves getting the trans fluid up to 185F, car level, running in Park, and the fluid check plug removed. If filled correctly, fluid will dribble out. If you don't have leaking cooler lines, your fluid level is probably OK. Basically this:
Transmission Fluid Level Check on 6T35, 6T40, 6T45, Cruze, Sonic, Astra | RPM automotive
Joined Jun 12, 2017
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6 Posts
Discussion Starter · #7 · Jul 13, 2017
No dipstick, and not common since 5-speed ATs left market. The check procedure involves getting the trans fluid up to 180F, car level, running in Park, and the fluid check plug removed. If filled correctly, fluid will dribble out. If you don't have leaking cooler lines, your fluid level is probably OK.
Basically this: Thank you.
Transmission Fluid Level Check on 6T35, 6T40, 6T45, Cruze, Sonic, Astra | RPM automotive
Joined Jun 19, 2017
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132 Posts
No dipstick, and not common since 5-speed ATs left market. The check procedure involves getting the trans fluid up to 180F, car level, running in Park, and the fluid check plug removed. If filled correctly, fluid will dribble out. If you don't have leaking cooler lines, your fluid level is probably OK.
Basically this: Wow where have I been haha. Good to know. Sent from my SM-G935V using Tapatalk
Transmission Fluid Level Check on 6T35, 6T40, 6T45, Cruze, Sonic, Astra | RPM automotive
Joined Aug 27, 2015
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319 Posts
Its 185F-203F actually...
Joined Jul 27, 2016
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21 Posts
I can't ever seem to get the tranny up to the required temp and I'm in sunny CA. Always measure exactly what comes out, but has me a little worried. So far so good though, no funky sounds or acting up on the '12
Joined Aug 25, 2014
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271 Posts
I only got mine up to 176F, but did some calcs. The volumetric difference between 176 and 200F is only about 1.8 fluid ounces. I would say thats close enough.. In other words at 176F you have 1.8 fluid ounces (water equivilent) extra fluid in there than if you did the fill at 200F.
Joined Feb 25, 2011
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1,383 Posts
I only got mine up to 176F, but did some calcs. The volumetric difference between 176 and 200F is only about 1.8 fluid ounces. I would say thats close enough.. In other words at 176F you have 1.8 fluid ounces (water equivilent) extra fluid in there than if you did the fill at 200F. How did you calculate the
volume expansion vs. temperature? Is there published data for volume vs. temperature for ATF fluid?
Joined Aug 25, 2014
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271 Posts
Yes there is.. In fact all light oils have a very similar volumetric expansion.. If you Google you will find.. It comes as a rate of relative expansion per degree C. If you changed your ATF cold the difference is like over half a qt. But the last 10 deg C is minimal.