u guys r going to think im lieing or something... but im going to post this anyway.
i have found that certain products are not all that they seem ive also looked these up on the internet so im including some links along with were i first heard about it
low temp thermostats... they decrease ur gas mileage
they decrease knock by keeping ur car running rich by keeping the pcm in from thinking the car is warmed up yet. i heard this from an ase certified auto tech, he also explained it to me.
*this is apparently a myth
k&n air filters... to oily and come apart after several cleanings
these can destory ur maf from being to oily. they can also destory ur engine if they come apart. i heard this from a gm certified technician
teflon aka ptfe oil additives... create clogs
this applys to oil additives only. these will clog ur oil filter and oil galleries.
i found out about this when i decided to research oil additives online.
please take this information into consideration... and correct me were im wrong... and if u have information about other products like the ones listed above please let me know