[notfarnow]

To clarify, the battery in the Jetta is A-1. The car starts easily, even with 15w40.

It's the suzuki w/diesel engine that's giving me grief. Battery is about 3 years old. It came with the 1.6TD engine from a 92 Jetta diesel, and started it no problem last winter. It sat unused for about 4 months, but had a good charge the whole time. I'll try hooking it up to a charger to see if it starts better. I don't mind buying a new battery, if that's what I need. Only problem is size, it's original 1.3 gas engine only needed a dear little battery to spin it. I'll need to hack & hew to make room for a larger battery.

I'm not too keen to go with a lighter oil, I drive the thing pretty hard and it's doing 3400 rmps on the highway. I've always been able to start diesels with 15w40 as long as I had a good starter & battery and 4 good glow plugs.