Whites! --Washing machine

So, I have NO idea why but my washing machine is making my whites go a bluey tint/grey colour.. Ggrr! So annoying, it doesn't seem to make any difference what type of washing powder I use! It's really starting to annoy me, I can't even have any nice white singlets as they go all yukky! Everything starts to look old really quickly!!
I noticed the same thing happening last winter at my MIL's house- she has the same washing machine but a step up from this one (the newer model?).. But then we went back home to another washing machine, a top loader and had no problems. Pretty sure its not the water as our other place was just round the corner.. And its happened in this washing machine and MILs one (and she lives out of town!)

I really wanna be able to KEEP my whites, white! Especially with a baby on the way, we would like to keep nice stuff nice! And I'm using cloth nappies, so don't want the white ones going all yukky!

Does anyone have any suggestions at to what we can do? We can't buy a new washing machine-way out of our budget! Is there any tips/tricks on what I can do?

My Mum doesn't know what I can do either.. Its just starting to wear me down, I don't wanna have to hand wash everything! (Can't hand wash cloth nappies anyways??)

Oh, its a front loader- I dunno if that makes any difference?

The seals in the front get smelly, I wash them... What else do I have to wash?? Theres a filter in the back somewhere right? I might get DH to do that (I can't imagine it'll be pretty?)

I actually don't know if our washing machine does a hot wash?? (OMG i sound like such a retard!) Lol. I'm pretty sure its only hooked up to cold water? I've never noticed if it heats the water? Do they do that themselves???

Its a Bosch Maxx, WFO 2050

I'm tempted to put a load of washing on now just to find out... Is it bad that I actually have no idea??!!

Can I still put vinegar in? Could it go in the thing in the top where the powder goes? It won't spill out everywhere? (I've never had to put liquid in there?)

Is it bad that I didn't know that the numbers were degrees? I just looked, and realised it has the wee o degrees sign.. I usually wash on 30.

Just put a small load of whites on, that I'd been soaking, and put them on 90 (maybe overkill but oh well) with a 3/4 scoop of washing powder (i usually only use 1/2) so will see how that turns out..

Also just opened a new box of washing powder, and realised the old stuff was top loader stuff, dunno if that'd make a difference aswell? But the new stuff is front loader stuff so should be sweet...

Will see how this goes!!

Not sure if this applies to front-loaders but a technician that was once looking at my Mum's machine told her that they need a hot-wash every now and then just to help clean out the pipes etc which are more likely to gunk up with cold-washes that are most popular these days.

I know my washing machine has a filter panel on the side of the drum that I pretty much need to clear out every second wash - sorta like clearing out a dryer filter of lint.

Yup, you have to do your white in hot water otherwise they do go yuk. There should be a button to adjust the temp, take it as high as it will go - ours goes to 95 degrees (100 is boiling point). You can also add some nappysan with your washing powder to get them extra white.

Good luck!