I did that mission with usage of all diagnostic tools. It found most problems. The rest check all filters and pumps and stater.

This one is definitely a pain in the bacon without all the diagnostic tools, especially since the relays and fuses don't visually show condition like the rest of the parts. My biggest tip on jobs like this is always check/remove all the filters, since (as Xenarius said below) they don't show up with any diag tests.

It's a difficult job, as many parts are below the 22% minimum threshold...but the game doesn't want you to replace those. Only the ones on the "secret" list. Good of you to share. ;)

I have just accepted this order, this is really helpful and. Thank you!

did the same thing and still missed a couple. thanks!

Thank you for this! Saved me god knows how long after trying to find out the last part since it all looked horrible and none of the tests showed the Oil Filter, Cheers!