400 maintenance: fluids and filters

Part of the maintenance was of course refreshing all the fluids and replacing all filters, spark plugs and belts. Both sumps (engine & transmission) were thoroughly cleaned. In case you are wondering, just like I did, what those metal flaps are about in the sump. I was told these are there to Ensure enough oil stays within when you are cornering. Simply but clever. As can been seen on the photos, the cleaning and replacing of all filters was quite necessary. The air filters were Original and as such quite expensive, next time I will order immitation via superperformance. The filterkit for the TH400 was of course easily available and affordable. Hurray for GM.