Yup, Even oil manufacturer do not claim the long mileage and usually ask to follow car manufacturer OCIwhich oil? used mcdonald cooking oil or JTX? :hmmmm:
Taken from Mobil 1 website : Mobil 1™ Extended Performance is good for 15,000 miles or one year under normal operating conditions.
(but they say you MUST follow your vehicle manufacturer recommendation)
which means you MUST follow your engine OCI not the engine oil..
Thats only around 24,000km..
---------- Post added at 09:51 AM ---------- 6 hour anti-bump limit - Previous post was at 09:48 AM ----------
Yup, good explanation. That is why the oil gets dirty and you need to change them when due...The funniest claim I've seen by JTX sellers is that there's no "chemicals" in the oil. Must be made of pure crude oil then!
If you have to ask about cleaning detergents like that, you obviously know nothing about engine oils :hmmmm:
Engine oils are made of base oils, detergents, friction modifiers, heat dissipants, etc. The purpose of engine oil isn't just for "protecting" your engine. It lubricates, dissipates heat, cleans the engine of varnish / sludge / carbon (some extent) and all that. So if your oil has no detergents it's pretty useless. If you don't know what varnish, please go read up about it first.
To me a quality oil is one that keeps my engine clean, keeps my engine cool and keeps it running smoothly without breaking down too quickly.
This isn't called dirty tricks. It's called business. There's no such shop that'll sell brands that they don't carry.
Actually, I'm wondering why you're using such a thick oil.
Br. SC mention 20w-50 is because that is what is recommended in his car manual...hahahaha