Re: advice on ultramatic for 1952

Posted by HH56 On 2017/1/24 15:50:03

IMO, if you know what fluid is in there now and it is clean and no evidence of overheating or burning I would just add more as needed. For the most accurate dipstick reading, run the engine at a fast idle for a couple of minutes to make sure the converter is full and then check or, if you prefer shut the engine off and check the dipstick within 1 minute after the engine is turned off before the converter has a chance to drain any fluid back.

If the fluid type or history is unknown or many years old then maybe a complete change is in order so at least you know what you have next time. I don't think there is any harm adding a small amount of different type fluid but others will be better versed on that.