you don't have to believe me. i've only worked in the automotive undustry for 10 years.
but honeslty guys, motor oil cannot increase HP, idle you smoother, warm you up faster, or anything else, unlesee you were using a non conventional oil (like Wesson or something) or had an EXCESSIVE amount of time b/w changes, (like 25K miles) ti's a lubricant.
ask any mechanic, tech or knowledgable auotmotive expert. it's no differnet than someone saying "because the butt dyno said i gained HP from my stickers, it must have!" what ever you are feeling, its MENTAL.
and i resent that negative remark weapon! wrf?