I never thought of that angle. I will look for a chart. It wasn't frigid yesterday when I took the readings about 20 F, but the day prior when I got the even lower voltage, it was much colder, 6 F.

After seeing my buddy the mechanic tell customers they paid for a tow-in because of dirty battery connections or dry cells, I am now well trained. I clean the top of the battery, the posts and connectors spring and fall. And I check the electrolyte when I do the posts.

__________________


Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

Some surface leakage of currrent is probably more common than thought in harsher climates. A good wash down with baking soda occassionally should not hurt.

Okay in the interests of honesty to those who replied, and even more importantly to those future searchers who may look at this thread....

If you are having intermittent or inconsistent glow problems, do yourself a huge favour and check that the 8mm nuts that hold the glow harness connectors on the plug ends are tight.

FIRST.

Number 1, 3 and 5 of mine were loose. The thing I don't get is that I put in 2, 3 and 4, and my wrenching neighbour (who has suitably small hands, I have mitts) put in 1 and 5.

So we both managed to not tighten down the nuts properly, that day. Amazing.

Someone pass me that pointey white cap and stool, willya?

Seacrest, out.

__________________


Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22