0W20 oil

and this benefit is completely reversed by drl's...

can't have our mighty oil industry suffer from consumers being able to
buy more economical cars now, can we? that's why "safety" [and thus
vehicle weight] keeps being stepped up each time manufacturers make more
economical engines - to keep actual consumption the same as it was 20+
years ago.

 

In a nutshell...


5/20 oil has the consistency of straight 5W oil when cold and straight
20W oil when hot.


No rocket science here..

JT

 

I think it is more complicated than you think. The "W" in 5W doesn't
mean "weight" it refers to "winter."

The SAE specifications define "cold" and "hot". Hot is 100 degrees C
(212 F). Multiviscosity oils will behave differently than straight
weight oils at other temperatures. I think a more correct way to
express things is to say a 5W20 oil meets the low temperature
requirements of a 5W oil and acts like a 20 weight oil when hot. The
requirements for a 5W oil include things like a low temperture
cranking viscosity at -30 degree C, a low temperature pumping
viscosity at -35 degrees C, etc. (other "W" oils have different
requiremetns at different low temperatures see chart in
http://www.zddplus.com/TechBrief13%20-%20Oil%20Viscosity.pdf ). It
doesn't mean the oil has the same viscosity as a straight 5 weight oil
when cold, rather it means it has to meet the requirements for a 5W
oil (where the "W" refers to "winter" not "weight").

Ed

 

Sounds good to me!

JT

 

snip

If you really wanna get confused go to Bobistheoilguy web site and
read how an oil's viscosity can change with use; i.e., that 0W20 you
put into the car won't measure 0W20 when it comes out (it'll be
"thicker").

Synthetic oil is probably cheapest at your local WalMart. A 5 qt jug
is about $25.
If it were my car, I'd feel comfortable running synthetic 0W20, 5W20,
0W30 or 5W30. Honda (or any other manufacturer) won't void the
warranty over oil viscosity; but they will over missed oil changes or
failing to keep the crankcase full (not more than a quart low).

Enjoy the new car.