10W30 vs. 5W40 in Honda S2000

[biodiesel00]

I recently acquired a 2003 S2000 with the 2.0L 9k rpm engine and was wondering if anyone would care to throw out some suggestions regarding which brand oil they might go with and what weight to use.

The owner's manual specs the use of either 10W30 or 5W40 but I'm leaning towards the 10W30 being in Texas and not too familiar with 5W40. Would 5W40 be something more beneficial in the summertime say for track use? I really don't plan to track that car but maybe once or twice a year so it will mainly see street use.

Anyone have experience with this engine, F20C, or know someone that does? All feedback is appreciated.

 

[Thomas Pyrek]

Any of the people that I know that do National level solo II and only use their s2000 for that use Mobil 1 10w30.

 

[SilverGGA@Work]

http://www.honda.co.jp/parts/hop/oil/next02.html

I would say 5w-40. Especially under Texas heat.

 

[John in the ATL]

Mobil 1 now has a 5w-40 called Truck & SUV oil. It is actually rebadged Delvac 1 used in heavy diesels . Since your car allows for it, this looks to be a good choice for your vehicle.

If you want to use Mobil 1 10w30, consider add a quart or two of the 15w-50 to thicken and beef up the additive package. Mobi1 allows for mixing of their oils and is probaly the best brand for this.

The last oil to consider is the Germany Castrol Syntec 0w30 which is a heavier 30 weight at 12.2 cST 100 deg C. This is A3 rated and is spec'd by the European autos. The Euros also spec 5w-40.

 

[416Rigby]

For that engine, I would suggest Redline oils. They are made for those conditions.

 

[gtoracer]

I also just purchased a my03 s2000 and the first thing I did was change engine oil to GC 0w-30.
Then I changed the rear diff to Mobil 1 75w-90.
Then I did the 6sp transmission to GM synchromesh friction modified .
Engine has smoothed out and transmission shifts like butter, sure is fun going to 9000 rpm!!!
Cya Pete

 

[biodiesel00]

Thanks for the link SilverGGA.

I've been thinking about going with a 5W-40 but they all seem too thick. I suppose Honda knows what they're doing with their recommendations but it seems like it would rob both horsepower and gas mileage.

Anyone else care to comment?

 

[uconn1150]

Texas! You know it's hot here! How often do you drive the car? Shoot, I've had to use the A/C already a couple of days in the afternoon and it's only February! I have a B16 in my Honda and have run Schaeffer's 15w40. I was tempted to try out the 5w-40, but for our climate 15w40 will be fine. You should invest in a used oil analysis to find out exactly which oil performs best in your engine!

Here's my used oil analysis

[Edited for used oil analysis link]

[ February 19, 2005, 02:56 PM: Message edited by: uconn1150 ]

 

[seotaji]

Mobil 5w-40 is perfect in texas heat/idling in extremely hot weather.

My friends use it in their accords, nary a problem, gas mileage or otherwise.

 

[biodiesel00]

I talked to the previous owner on the phone today and he stated that prior to selling me the car he had been using Redline's 10w30 for the past two oil changes.

Now I'm really not sure what to do. Should I stick with the 10w30 since the engine is accustomed to it or should I go for the 5W-40? Looking at the specs on Redline's website for both of these shows the 5W-40 to be much thicker with a Vis @ 100c of 15.1 vs. the 10w30's at 10.7

Would anyone else worry about this or would the added thickness not be a problem at all?

Here's the spec sheet if anyone wants to take a gander:

http://www.redlineoil.com/pdf/4.pdf

 

[biodiesel00]

I've pretty much decided on the Motul 300V Power 5W-40.

After comparing their numbers to Redline, Amsoil, Delvac, Havoline, etc. they seem to be currently superior.

I plan to get a used oil analysis done on the Redline 10w30 that is in there now and another in 5k miles with the Motul.

 

[buster]

quote:

---

The owner's manual specs the use of either 10W30 or 5W40 but I'm leaning towards the 10W30 being in Texas and not too familiar with 5W40. Would 5W40 be something more beneficial in the summertime say for track use? I really don't plan to track that car but maybe once or twice a year so it will mainly see street use.

---

Honda calls for a 5w-40 in the S2000?

 

[Triple_Se7en]

I thought I read somewhere in a magazine ad that the Dallas Police Department still uses Havoline 10w30 in most of their fleet. Been doing so for something like 20 years.

 

[1999nick]

quote:

---

Originally posted by Triple_Se7en:
I thought I read somewhere in a magazine ad that the Dallas Police Department still uses Havoline 10w30 in most of their fleet. Been doing so for something like 20 years.

---

It's called "going with the lowest bidder".

 

[Triple_Se7en]

It's called "going with the lowest bidder".

Since the ad broadcasted the Havoline attributes as it relates to extreme driving conditions conducted by a major Texas Police Department, I thought it would "easily" serve the purpose for the thread-starter here.

Besides all that.... it's a pretty terrific oil.

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