My brain is overloading
. I've found what looks like reliable info to support your (expert) opinion.
Take a look at Civic Type R Owners • Login
I do not know whether I can copy the contents of the post I have linked (which does not seem to work
)to but here goes:
it appears that Honda are using 10w-40 for running in
After the run-in period, these are the oils/fluids you should use as per the Manufacturers recommendations.
Lubricant report for:
Honda, Civic 2001, Civic 2.0 16V Type R, (2.0 Typ R VTEC),2001-
Manufacturer: Honda Motor Co. Ltd., Tokyo, Japan
Drive type: f.w.d.
Cilinder capacity: 1998 cc
Power output: 200 HP/147 kW at 7400 rpm
Engine, petrol, 4-stroke, water cooled, 4 valves/cyl.
Capacity 4.50 liter
Filter capacity: 0.20 liter
Change every 20000 km or 12 months
Year-round API: SJ-EC SAE 0W-20
Year-round API: SJ-EC SAE 0W-30
Year-round API: SJ-EC SAE 0W-40
Year-round API: SJ-EC SAE 5W-30
Year-round API: SJ-EC SAE 5W-40
IF the oil would get too thin, you'd get metal to metal contact. If it's to thick, there is too much friction...I guess it is an endless discussion