Auto Fluid and filter change. - Page 2 - Chrysler 300C Forum: 300C & SRT8 Forums
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post #11 of 14 (permalink) Old 03-07-2019, 07:59 PM
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PS - I have both dipsticks here and can take a pic if you are interested. (And if I can work out how to attach :P old blokes )

They are completely different and both labelled "cms" but would give completely different readings.

I am assuming that the "compressed" one is one that was made copying the Mercedes "zoned" one (stepped and "hot/ cold" ) and just replacing the temp zones with "cms" but as an assumption I could be wrong.

Chrysler go to all the trouble to produce a very detailed graph to show correct level with temp, so makes sense for me to use a correctly graduated cm dipstick to make the most of it.

Last edited by OzKen; 03-07-2019 at 08:14 PM. Reason: Add pic
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post #12 of 14 (permalink) Old 03-07-2019, 08:17 PM
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Dipstick

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post #13 of 14 (permalink) Old 03-08-2019, 02:59 AM
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Thanks OzKen for super informative posts! Did you notice any symptoms from your fluid being low? I sometimes get what I can only describe as a groaning noise from the transmission after a cold start when lifting off the gas and cruising to a junction. Car's done 130,000km (81,000m) and I doubt anyone's ever touched the auto box.
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post #14 of 14 (permalink) Old 03-08-2019, 07:18 PM
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Hello mate;

Yes, I did. I have mentioned it on another thread, but so many here. My reply from there is HERE

"My car did similar for a few years, but so intermittently that was hard to check.

About once a year (yep, once a year!!!) it would feel like running on half the cylinders for about 15 seconds, then ok. No fault codes, nothing else.

It ALWAYS did it within a couple of miles from home, always when cold, and always after a left hand turn. Talk about specific.......

I checked the trans fluid level, and it was down a bit, but not overly so. I avoided topping up as car normally ran perfect, and so many stories about "don't overfill/don't top up for life/if it's ok leave it/etc."

Also, here in Aust, ATF4 (apparently common in the US) is very hard to get here. While the "universal" ones say "are ok/fit all" I don't trust that, so put it off until I could filter change/flush/buy new fluid from Chrysler - so I KNEW was same fluid to mix with the small amount left in the trans.

A year ago, I wanted to do a filter/fluid change, so read up again/researched how much to put in, so as not to over fill.

When I pulled the pan off, I noticed that the pickup is slightly off to the left side.

When I refilled the trans, it took almost a litre extra to get it to the level it SHOULD be. Note that the level between cold/hot is quite different.

Therefore I deduce from this that while the level is ok normally, when very cold, level is low enough to slosh to one side on a left turn, and temporarily starve the feed for a few seconds.

Going into a corner with no throttle the trans will be in a high gear, as soon as you turn and accelerate, it should kick down. If mine has no fluid temporarily, it could stay in a high gear, and would therefore be trying to take off from slow in 3rd or 4th, so the "missing" isn't the engine, it is a cold engine struggling in too high a gear."

I surmise that is what my intermittent "stumbling/missing" problem was.

Full thread on that HERE

https://www.300cforums.com/forums/pr...44#post2791447
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