I've heard a rumour (Dunno true or not) that double core spark plugs ie:-Splitfire,NGK CopperCore plugs can make ur pistons "berlubang"cause of the overspark especially if ur car engine is bone stock standard.Is it true:questionmark:
can u tell me where to find user manual/service manual in the internet for free?
usually need to be paid
anyone know?(pdf file)
my car is isuzu trooper 2.8 diesel turbo
need to know more about my car