light question for the experts: B3 vs B4.

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Shannow thank you for your awesome detailed explanation!

you aimed to my fears exactly, and answerd theright snawers.
and now i'm a bit tempted to try 5w40.(next oil change)

thank you again Shannow, all the best to you and your family!
 
Originally Posted By: supercity

What do you mean by more compression? SN is irrelevant for a diesel engine.

It is possible for an oil to meet SN and A3/B4. It is also possible to have SN and C3. But it is impossible to have A3/B4 and C3 since 2010.

2 month ago i asked a auto-shop guy, about oil, and he told me, to get oil with SN spec, it got more compression.(it was after i told him with champion oil 5w30 c3, when i "floor" it, my rear wheels would spin on the tarmac, and with Valvoline XL III, it's not happen anymore.)
he wasn't an expert, i think he might heard that, and said it to me.

anyway, i'm gonna read and re-read this thread, until i can "master" the info.:)


guys, from my heart, THANK YOU!

btw guys, i just thought about it, my car is Japanese, you think it's better to have oil that support Japanese standard? like jaso-dl1.
or
ACEA is top notch, and that's final verdict about oil.

:eek:)
 
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