Hello. The DEF in my JCB has been in the machine for at least 17 months. Sometimes I get a warning and sometimes I don't. I'm wondering if that could be related to a low battery, because I recently charged the batteries and now I don't have a warning? Any input there would be appreciated. The main purpose for this post here is this: from what I read DEF should not be in the machine for more than a year. So I plan to drain the tank and I'm wondering if I should put some distilled water in there as a rinse, or just put the new DEF in? Thanks in advance for any help you can provide.
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