Ok, so just went over to the lighter weight 5-40 weight Rotella synthetic. Is this a common problem when changing over to a lighter weight oil? I have checked all the vacuum lines next to the filter housing and nothing is disconnected. So I just ask the question is this common. I know where to find how to adjust the tranny so I just want to know if this is a common issue.

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http://i148.photobucket.com/albums/s...titled-1-3.jpg
1981 300d

Are you saying you added 15-40 in your transmission or in your engine?

ATF goes in a automatic trans, and some manual trans.

Adding synthetic to the crank case shouldn`t affect the trans shifting.

When I started using synthetic engine oil the engine seemed to run smoother. there wasn`t any change to the way the trans shifted.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I am not stupid, I know that. I added 5-40 Shell Rotella in the Crankcase and the transmission is now taking a longer time to shift into gear.

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http://i148.photobucket.com/albums/s...titled-1-3.jpg
1981 300d

Taking longer to shift is not a function of vacuum. Maybe you disturbed the bowden cable.

And the forum will be the judge of whether you're stupid

Sixto
87 300D

Yes it is very common. Every time you disturb a vacuum line, the transmission shifts hard. I've done it at least twice that I can remember. You can put 0W20 or 20w50 in the engine and the transmission won't care.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

The 81's are non turbo's and don't have bowden cables.

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http://i148.photobucket.com/albums/s...titled-1-3.jpg
1981 300d

Synthetic is slicker which means the engine takes less power to turn (reduced friction) and you're using less throttle to accelerate the same. The difference is small, but its there.

It really is taking alot longer to shift then normal, most of the time if you want it to shift you can let up off the throttle a little but now I have to let it all the way off the throttle to have it shift.

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http://i148.photobucket.com/albums/s...titled-1-3.jpg
1981 300d

Check all the vacuum lines near or over the oil filter housing.
Follow them up to the valve on top of the Cam cover.
Make sure rubber on the valve is nice and tight to the lines as well as any other rubber connectors

Odd, its the other way from what I figured.

as was said above if the vacumn is reduced the car will take longer to shift up and the oil filter area is a great place to start to look for a line that had been bumped into and dislodged - jz