10w 40 and Honda

[Geonerd]

Won't hurt a thing.

Hot 10-40 has the SAME viscosity as slightly cooler xW-20. Those of you running 'thin' oil, you don't hear horribly grinding noises coming from under the hood as the engine warms up, do you?

Mild Overkill, but 100% harmless!

 

[steve20]

Originally Posted By: aquariuscsm
From Pennzoil/Shell Australia for the 2008 Accord 4 cyl:

Application Recommendation Capacity (ltr)
Engine (P) Premium HELIX ULTRA 5W-40
Standard HELIX HX7 AJ 10W-30

10W40 won`t hurt a thing.



What a great excuse to try out 5-40 in the K24 on the next run

Wonder if the Aussie V6 Variable cylinder Management engines are having the oil consumption issues we are having?

 

[CATERHAM]

Originally Posted By: Geonerd
Won't hurt a thing.
Hot 10-40 has the SAME viscosity as slightly cooler xW-20. Those of you running 'thin' oil, you don't hear horribly grinding noises coming from under the hood as the engine warms up, do you?
Mild Overkill, but 100% harmless!

You've got things backwards.
The fundamental tenant of lubrication is "as light as possible [but] just as thick as necessary".

While a 10W-40 may be "only" 75% or so heavier at 100C
than a typical 5W-20, it will be a whopping 240% thicker at room temperature and more so as temp's continue to drop.

 

[zmelli]

Originally Posted By: Pete591
Honda engines with VCM perform poorly with heavier oils. They need 5W-20.

2011 engines have a document you have to sign stating you agree to use 0W-20. Tight tolerances and coatings.

I would go with a good synthetic oil at Manufacturer's specs before going heavier.




Honda uses 0W-20 to help maintain government Fuel Economy requirements (CAFE). The EPA then forces Honda to pressure the consumer to continue using the thin oil. Thin oil will not protect the main bearigs under stressful conditions. It all comes down to oil temp.

 

[JZiggy]

How about for an older D15B7 (1.5L) with 200k+ miles, spec'd for 5w-30? Think 5w-40 or 10w-40 is okay at that point?

 

[dparm]

As thin as possible, but as thick as necessary.

I don't think that D-series needs an Xw40.

 

[JOD]

Originally Posted By: zmelli

Honda uses 0W-20 to help maintain government Fuel Economy requirements (CAFE). The EPA then forces Honda to pressure the consumer to continue using the thin oil. Thin oil will not protect the main bearigs under stressful conditions. It all comes down to oil temp.


Yeah, I really wish the government would keep their hands off of my oil.

I'm wondering though, do you have a single shred of evidence to back up any of the nonsense you just spewed? Just wondering...