Aut. transmission is an 722.004 in a 1975 US W116 450 SE.
The trans lost a bit of oil when I rehabilitated the radiator. Quantity is unknown.
Now I'm trying to refill, but it's not easy to measure the level (engine idling).
Any tips?
- visit a professional workshop?
- replace filter and all oil and refill with 7,9 liter (according to spec)?
- other?
Indeed this can be a challenge. Most important is to make sure the engine is fully warmed up. Best to take a drive to get it hot but if you cannot then a long idle for sure.
Car must be level and engine running. You should also move the shifter to each position for a few seconds with brake on then back to P. Let idle a bit then take multiple readings. Add very little at a time as it's easy to overfill.
Thanks, daantjie
yes, I have tried exactly what you described. Long idle + a 10 min careful drive + shifter move. Refilled approx 1,1 liter.
I'm not seeing a "fairly obvious" oil mark on the dipstick. Maybe there is too little oil, but I don't want to overfill.
I would slowly add with engine running in P. It can be tricky to see it on the stick but if you tilt it under sharp light it should show. Just make sure you observe absolute cleanliness and wipe with lint free cloth. Chamois type cloth is best.
Solved!
This is a bit embarrassing ...
I had to refill nearly 3 liters, BUT THEN there was a clear oil mark between upper and lower marks on the dipstick.
Quote from: Jan S on 30 April 2022, 01:32 PMSolved!
This is a bit embarrassing ...
I had to refill nearly 3 liters, BUT THEN there was a clear oil mark between upper and lower marks on the dipstick.
Haha we've all been there...
Now I've been there too ;D
On a warmed up engine and transmission (~80*C), with engine running, the level should be exactly at the maximum mark.
Now that it's fixed I'd suggest that you do as I did. Get some high quality plastic bottles such as these: 250 ml bottles (https://www.amazon.com/6PK-Reagent-Bottles-250ml-Polypropylene/dp/B08W2DXS43/ref=sr_1_1_sspa?crid=2OWF4DO29DBCK&keywords=250ml+lab+bottle&qid=1651524444&sprefix=250ml+lab+bottle%2Caps%2C160&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFST1FJOFpSVFdISVomZW5jcnlwdGVkSWQ9QTAyNDcyMTM1QVpHUEtGSzBBSTgmZW5jcnlwdGVkQWRJZD1BMDk5ODQ1NjEzUjFIR003NUxYQVQmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl) and fill them with ATF. Use these to top off. The difference between the high and low marks on the stick is not very much. It's very easy to overfill and very hard to suck out XS fluid. Cheers,
Quote from: ptashek on 30 April 2022, 07:50 PMOn a warmed up engine and transmission (~80*C), with engine running, the level should be exactly at the maximum mark.
Thanks!
I re-measured the level yesterday after a 30 min drive. Engine idled for 5-10 min and level was exactly at the max mark. All good now, I think.
Quote from: raueda1 on 02 May 2022, 03:51 PMNow that it's fixed I'd suggest that you do as I did. Get some high quality plastic bottles such as these: 250 ml bottles (https://www.amazon.com/6PK-Reagent-Bottles-250ml-Polypropylene/dp/B08W2DXS43/ref=sr_1_1_sspa?crid=2OWF4DO29DBCK&keywords=250ml+lab+bottle&qid=1651524444&sprefix=250ml+lab+bottle%2Caps%2C160&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFST1FJOFpSVFdISVomZW5jcnlwdGVkSWQ9QTAyNDcyMTM1QVpHUEtGSzBBSTgmZW5jcnlwdGVkQWRJZD1BMDk5ODQ1NjEzUjFIR003NUxYQVQmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl) and fill them with ATF. Use these to top off. The difference between the high and low marks on the stick is not very much. It's very easy to overfill and very hard to suck out XS fluid. Cheers,
Yes, good idea to keep an close eye on the oil level of these old trans ... especially when suffering from "incontinence" ;D