Wanted to start a new thread but recalled that there was one already made.
We all discussed about the "brand" we use, but does anyone know the grade
or oil specs we should consider in buying our engine oil?
I was only informed by fellow zuki drivers to use 20W-50 & to buy this brand.
But I found out in this thread that some are using 15W-40. My minivan model
is 1991 as per info from the seatbelt. Some of our Carrys are 1993 to 1999
model. I read from a brochure about engine oils that the older the cars are,
the higher the numbers (viscosity index) should be. Our climate is also one
factor for choosing oil, but I don't have the exact specs of oil to be used
in our Carrys/ Everys.
One question: On my previous three change oils, I used 20W-50. I will use
15W-40 on my next change oil, will it affect my engine performance badly?
Will it leak? (since the oil is thinner) Will my fuel efficiency increase? (due to
Before I was using Fuchs Titan 20W-50 but now I shifted to a cheaper
Helix Super (Shell) 20W-50. My fuel efficiency decreased from 14km/L to
only 11km/L. Of course some factors like proper tune up, spark plugs, fuel
filter / air filter change, extra wts on trunks are all being taken cared of.
But the change in consumption is big enough for me not to recognize.
Appreciate if you can share your views on this topic.
Thanks in advance.