Post by
Pescakl1 »
https://forums.nicoclub.com/pescakl1-u98038.html
Wed Dec 22, 2010 8:54 am
Who said that a lot of miles = highway? Ask Phillip how many highway miles he did on his total mileages. From what I understood, he does a lot of secondary roads, city traffic and such. He just spend more time in his car than both of us combined.
Highway miles are easier than city miles because you have less fuel dilution since you are almost always at the same RPM. Is traffic jam on the highway still considered highway miles or more city miles?
The other thing is that the number of starts is not that important, the important figure is the number of cold starts. As long as the engine is still warm, restarting the engine has no consequence, except maybe some fuel dilution, like in city driving.
BTW, dry starts don't exist, that is a myth, the cylinder walls have always a layer of oil on them, even after the car sits for a long time. People who disassembled engines reported it. Sure, you will have more wear on a cold start until the engine is warmed up and every parts are in place, but dry, no.
The most important thing to remember is that after 6 months, the oil, whatever how the car is used, will be full of junk, sometimes with some traces of fuel in it, and its properties will have been changed. So it is better to change it. Whether or not it is regular or synthetic, it doesn't matter much nowadays as regular oils are almost as good as synthetic ones.
For sure, it is always better to use synthetic oil compare to regular one, but is it necessary? Sounds like a FWD vs AWD question.
The most important thing is to change the oil, not what type of oil is it. The type of oil to use is starting to be important when you go to the limit of the usage, either in time or mileage.
As for sludge, it is either due to design, some engines are prone to that (there, you'd better use synthetic to prolong the life of the oil which is destroyed by the engine, or change it often if you want to use regular oil), or because the oil is not changed. Do you know you can still get sludge with synthetic oil?
As contrary as the VQ series, our engine is average in oil usage, not the easiest ones (GMs, Hondas), but not one of the hardest. Just remember to change the oil regularly.
Kerrton, everything I wrote here is a resume of 3 years and counting of reading and analyzing what it is said and debated on BITOG which is a specialized forum on lubrication. So maybe, my analyze is wrong, but there is a lot of data over there who make me believe I am not too far from the truth.
From what I read yesterday, almost 90% of cars used regular oil and not synthetic (oil manufacturers data). That includes us in Canada.
But remember, most of them still use either the 3k/3months program if they are old school, or 5k/6months if they follow the manufacturers schedule (Toyota, Ford, Nissan (even if this is not written like that, most of them choose to go between severe and normal schedule at 5k), Hyundai, Kia, etc...). Only Honda and GM (+ Germans) use Maintenance Minder which can push the change further, but even with this information, most of people choose to not follow it and change it after 5k.
So you can say, a lot of people use regular oil and never go further than 5k/6 months. And not so many engine blow ups or engine sludges from what I can read on the internet.
To each is own, if you want to use synthetic, go for it, that is your money you spend. But if you ask for advice, I would tell you that it is not necessary (no need), using what I have learned on the internet.