What I think is important when washing your jeans, is to fold them inside out. This keeps a lot of the indigo dye in the denim, which prevents fading, as well as protect the exposed outer seams.
On day 161 I crashed my bike and got a big grease stain on my knee. I always use vanish when washing, and this means my denim too, if they ever get washed. I wasn't sure it would work so well, because the stain has had 20 odd days to settle into the fabric. I am glad to report that the stain is completely gone.
The washing machine I use has a lot of settings, so I choose the one that seems most appropriate, called 'Denim'. The only problem I have is that the program ends with a spin cycle, which I try to avoid. The reason for this is that the spin cycle, no matter how slow, sucks out all the water. This means dye, which means more fading than is absolutely necessary. So I always set my alarm to 5 minutes before the cycle ends, so I can pull the plug and hang them up wet, to dry naturally.
Tomorrow I will publish some photos after the wash, stretching the seams and hanging them up.