i got a d16z6 with zero mods and i was wonder if anyone puts in 10w 30 instead of the normal 5w 30.

 

yea man you can run any weight oil you want to in an engine. The weight usually varies depending on the temperature outside or if the motor is really worn out, you can put heavy oil in it to make up for the worn spaces inside the engine. But if you are going to put 10w 30 in over the recomended 5w 30 you should be fine.

 

A D16Z6 requires 10w30 not 5w30 last time I looked. You could put 5w30 in the engine depending on the miles and you actually might get better mpg with the lighter oil. I've run 0w30 in my engines in the past and saw a 3-5% increase in mpg

 

The recommended oil viscosity for a D16z6, as in my car, is 5w30.

According to Honda it's OK to run 10w30 if the temperature never drops below 20degrees F. (Listed in owner's manual and on air-filter box)

In theory 0w30 would be even better in terms of both protection and mileage. However, in some cases (varies from one engine to another for various reasons) it can be beneficial to run a slightly thicker oil, but there are varying opinions on that.
Keep in mind that once up to operating temperature, there would be virtually no difference between the 10w30 and 5w30, the only considerable difference would be when the motor is "cold".

The previous owner of my car ran 10w30 only, at times the temp. got to below 0. Luckily for me the motor seems fine, probably a good thing that they always let the engine idle until warm on those days (not necessary with the proper weight oil).

There's a small chance of me running 10w30 in the future, but only if it's synthetic(currently run synthetic 5w30). Just happens there's a high mileage synthetic that isn't available in anything lower than 10w30.

Even with it being synthetic though, I think I'll wait until warmer temps. come around before I consider going to 10w30.


P.S. around here all the shops list it as taking 10w30 also, whether that's b/c it can run that weight and the shops would prefer to use 10 over 5, or that it has something to do with the fact that the manual trans. is listed as taking either 10w30 or 10w40 engine oil, I really don't know.

Some engines list the recommended oil on the dispstick, cars w/ the D16z6 appear to only list it on the air-filter box, if at all.

 

All depending on external temperature you will be fine with 10w30. Where I live I see no temperatures below 10celsius and since 5w30 is not always available (don't ask me why) I currently run on 0w40 and will have no problem using 10w30. I use Mobil 1. In 6000miles the car consumes around 3/4 of a quart. Maybe with 10w30 consumption will be reduced.