RT

Chris, good stuff, bookmarked both of them.
That www.howstuffworks.com site is definitely cool

redone

When in doubt, trust the Honda manual. They have no doubt tested different viscosities and have come up with 10w-30 or 5w-30 for a reason. Wrong weight could affect VTEC possibly? If you have engine problems and you are not using suggested specs, who knows...as for brands, choose your favorite (but make sure it meets warranty specs - code that is).

Ronald

Hi,

I use the 0W40 Shell Ultra Performance fully synthetic. It's quite expensive (34 guilders per liter, that's about
14US$) but I never had any problems.

GTRPower

Hey people-

My 2 cents...

I use stock dino oil in my S2000- because it's so new.

For my Integra, I followed factory guidelines until I had to rebuild the engine 15K miles into its life. After the rebuild I used 10w40 mineral, then switched to 10w40 Redline about 5K miles later.

King Motorsports then later recommended that I switch to 20w50 after they tested the car at Laguna Seca and Big Willow Springs early last year due to wear- so I've been using 20w50 Redline ever since in that motor.

My other car, the GT-R has a factory recommendation of 7.5w30- like that's the easiest thing to find on the streets... I've been using 20w50 Redline in that car too, and we're rebuilding the transmission and filling it with Redline heavyweight shockproof oil. For the One Lap we are going to use Mobil 1 because it's a heck of alot easier to find at AutoZone et al. than Redline, so we don't have to carry a case of the stuff- hopefully an emergency fill of 5-7 quarts will suffice with whatever needed above that available on the road...

I believe in Redline products- they have performed as claimed for me, but that's not to say that Mobil 1 is not good- in fact, I think M1 is the standard by what others are judged. I am perfectly happy using M1 in my cars, but I know that the Redline product is superior.

Clark

Just a quickie to elviscos..... Please please please do not use PTFE additives like Slick 50 in your car (or any car that isn't already in sorry shape). They are solid particulate additives who's entire premise is the fact that they've come up with some miracle coating that will flow through your engine and deposit itself on the internal surfaces to reduce friction and improve performance.

Well if this miracle cure is solidifying itself on things that you do want to reduce friciton upon (bearings and cam lobes for example), don't you believe it is also coating itself on surfaces that you don't want buildup on (such as piston rings, valve guides, the entire inner workings of your oil pump).

This entire post doesn't even take into account the unique cylinder liners of the S2K's block, on which I have no idea what effect (if any) a solid particle additive might have.

Clark