Pluralizing a tractor brand .....

[used red MN]

Actually Red, the jury is out on this subject, even among learned (lerr-ned) English experts who likely do not hang out here. I do think though it is a more valid topic that asking members their opinions on whether or not a person should see a doctor before having brain surgery.

So how it is conveyed in print on these forums is essentially not that important. Sort of like the posts on Tales about what they have for breakfast or dinner.