These are the autolite platinum 3924?
I think my cylinders are burning pretty good but two are burning little oil . It's a 94 dodge ram 1500 5.2 V8 in it . Only 10000 kms on these plugs . I've bin keeping an eye on the cylinders and stuff . I think my cat is getting plugged . There's also a crack in the exhaust just before the catalytic converter . With the over drive off and going down hills at 60-70 kms I hear fluttering sounds in my exhaust like bubbles . I'll also burn some oil when I tap the gas . Think my EGR can be malfunctioning ? I have clean 5 -20 weight oil in it . Runs really good . !