QUOTE(zeng @ Apr 17 2021, 10:34 PM)
Helix Protect 0W30 A3B4 is a fully synthetic with a minimum High Temperature High Stress HTHS Viscosity of 3.5 mPa.s .
10,000 km oil change interval is easy meat , could go further if you are adventurous imho.
B1-B5 has a lower minimum HTHS viscosity of 2.9 mPa.s , it may be ok in a turbo engine on light duty use but I personally prefer A3B4/C3 oils with higher min HTHS viscosity of 3.5 mPa.s with options to whack the Hilux turbo engine once in a while or for Italian tune-up.
Do consider a C3 in future at similar price point for its far superior additive requirements compared to A3B4 .
FYI , ACEA C3 was introduced into Europe market in 2004 in conjunction with Euro 4 diesel launch.Malaysia's diesel is Euro 5, go figure.
I am impressed with my several observations of cleaner/better blotter spot tests performance of C3 oils in petrol engines vs non-C3 oils in my thread so far.
🙏🏻 thanks a lot for the clarification sifu.
Regarding the manual's suggestion, I should rephrase B1-B5 as B1 through B5, so basically the Hilux can use B1, B2, B3, B4, & B5. If I'm not mistaken, B1 has been replaced with B5.
As for C3 oil, thanks for enlighten me on it's superior additives & performance, never really did researching on C class oil, cuz I've focusing on B class oil, hahah.
Regarding the difference between B4 oil & C3 oil, both have HTHS of 3.5, but B4 has TBN >10, & C3 has >6, doesn't it affects the acid neutralising capacity of the engine oil and thus it's oil change interval? As diesel produce more combustion acid than it's petrol counterpart.