wowww dunno nowadays aluminium oso got ppl use to make exhaust header/extractor

anyway its stainless steel i guess...just use it...dont hear all those nonsense...if suddenly ur fuel gets worse, go check for crack at the joint...

as long as u keep on maintaining it properly and service it regularly according to schedule then dont worry too much...

U may fabricate custom heatshield for the extractor so that other nearby parts receive lesser heat i.e fan motor, tubings etc. can DIY some more..
I believe u meant for engine flush not engine wash right mate? btw, yes engine flush & decarbonize should help.. good products which i have personally tested for these purposes are Lambda Primer & Threebond decarbonizer, they really brought the smoothness back to my engine.. costing should be anywhere near rm90 for both..

You may do it like once per 30000km or so.. for engine oil just dont use recycled or super cheapo unreliable brand mineral oil which tends to form sludge inside your engine.. oil change interval must be strict too i.e every 5000km for semi syn or one per 3 months which ever comes first..

I am no mech or taiko but this is how i maintain my engine since a year++ back, and so far im satisfied with the outcome..
I punye alternator sudah kasi servis la bro, apa macam mau hantar pigi sampai ipoh mau servis?

all-in-one engine care by wandzul +100000
normal.. delicious feeling after change extractor symptom hehehe.. to make it lower, u may lighter ur leg then u'll get lowest reading

dont know haha.. as long as my car inside the box, put P and off engine haha..

Bukak bonnet, see at firewall.".got color code there...