I am still using Mobil 1 5-30W for my GSR with an oil cooler and I am curious should I up the viscosity since the car no longer runs daily in the cold winters, etc? What weight oil are others using? Thanks!

 

You should never need anything other than 5W30.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MightyMouseTech &raquo;</TD></TR><TR><TD CLASS="quote">You should never need anything other than 5W30. </TD></TR></TABLE>

What do you have to base this on?

 

I'm using 10w40 Mineral.
Wondering if I should tried some Synthetic,since when I'm on the track,the oil is seeing 260°F,pretty constantly.(Shift point is 8.5k)

Engine is a Spec-R(stock) w/a double core rad from a 'Teg and the oem oil cooler...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phat-S &raquo;</TD></TR><TR><TD CLASS="quote">

What do you have to base this on?</TD></TR></TABLE>

I'm guessing the manufacturer's recomendation.

 

I use 10W30. Used to run Redline, now Mobil 1. H3 GSR. Stock motor. 40+ races on it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MightyMouseTech &raquo;</TD></TR><TR><TD CLASS="quote">You should never need anything other than 5W30. </TD></TR></TABLE>

Racing = Higher temps, and requires a higher viscosity rating to maintain the proper viscosity for the temps you're using.

I'd recommend a 10w40 or 15w50 synthetic. IMHO.

FWIW, I use 0W30 Castrol syntec (german made real synthetic not the fake synthetic sold most places) and its much closer to a 10w40 than a 0w30. Available at autozone....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">FWIW, I use 0W30 Castrol syntec (german made real synthetic not the fake synthetic sold most places) and its much closer to a 10w40 than a 0w30. Available at autozone.... </TD></TR></TABLE>

What's your cost per Qt? thanks.

 

You know, Castrol also has a 10W60 racing oil, Castrol TWS Motorsport 10W/60. Might be a good option for hot summer days.

Have used it myself for two trackdays now this month and it looks to do the job very well, car burns no more oil than during normal daily driving. I'm normally using TXT Softec Plus 5W/30 btw.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">
FWIW, I use 0W30 Castrol syntec (german made real synthetic not the fake synthetic sold most places) and its much closer to a 10w40 than a 0w30. Available at autozone.... </TD></TR></TABLE>
why would 0W30 Castrol Syntec be any different than other weight Syntec? Castrol Syntec is all processed from organic, thus not "real" synthetic.

 

10W30 Amsoil

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vitt1 &raquo;</TD></TR><TR><TD CLASS="quote">What's your cost per Qt? thanks.</TD></TR></TABLE>

Autozone, same price as any other syn oil. Just a bit harder to find - and my UOA's have come out looking very good

https://honda-tech.com/zerothread?id=889557

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pondus &raquo;</TD></TR><TR><TD CLASS="quote">You know, Castrol also has a 10W60 racing oil, Castrol TWS Motorsport 10W/60. Might be a good option for hot summer days.</TD></TR></TABLE>

I wish I could get the 10w40 weight of what I use

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">why would 0W30 Castrol Syntec be any different than other weight Syntec? Castrol Syntec is all processed from organic, thus not "real" synthetic.</TD></TR></TABLE>

All the stuff made in the US is - Not the stuff made in Germany, which is what I buy @ Autozone. Only place to get it - Marked "made in germany" on the back of the bottle.

https://honda-tech.com/zerothread?id=897274 - some good info here, I think - there are alot of threads in the ITR forum about this.

 

I run 20W50 on my GSR. Stock engine with a lot of races on it. Maybe on a new race motor I would run a thinner oil but not with the miles I have on mine. Keep in mind some guys like Maxx44 are running rebuilt race motors. I would never run 30 in my stock motor.

 

It seems to be pretty accurate to say that running 5W-30 is a little "light" so to speak! Next time I do an oil change I will try running a bit higher viscosity... In the past I have always heard bad things about Castrol is there Synthetic good?

 

MOTUL 6100 10w40

 

I've been using 5W=30 Mobil 1 for years. Never had a problem with it, don't intend to change.

 

i second Karl's assessment; i've used 5w-30 mobil 1 for over 50k track miles and never a problem (oil related). this would be on various hondas and a mazda kl-03 engine.

of course, your mileage may vary!

todd

 

I use 0w-30 castrol synthetic euro version...good ****

 

Ah, the good ole' oil debate.

It really just comes down to how often you change it. Everyone will tell you X oil is the best... but in reality all major oil brands are good.

I have never sent my oil out for analysis, so I cant really chime in with anything worth a damn but the one time I ran M1 0w40 with a Honda filter the oil still looked brand new after a track event and 1-2k of street miles.

Im back to running M1 5w30 and Honda filter.

 

Any1 try Mobil 1 0W30 Racing?

http://www.mobil1.com/products/racing_formula.jsp

 

I have not even seen that racing formula in the stores... Anyone have an idea on the cost?

 

I don't really think anyone has had much of a "problem" with any particular viscosity. But Tom Fowler recommended running 20W50 on a stock motor like mine with a lot of races on it. Since he knows more than I do and because on the straights my car hangs with or pulls on every H3 car I have raced including some with race motors, higher final drive and pimpy header vs. my stock engine with JDM DC 4-1 I will run my Mobil 1 20w50 and change after every race.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTECAcuraGSR &raquo;</TD></TR><TR><TD CLASS="quote">I have not even seen that racing formula in the stores... Anyone have an idea on the cost?</TD></TR></TABLE>

Based on RJ's post I'd say abut $4.50 a QT, which is about the average price of M1.

 

Castrol GTX 10-40 and the car's oil looks great after a track day plus its dirt cheap from Costco.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vitt1 &raquo;</TD></TR><TR><TD CLASS="quote">Based on RJ's post I'd say abut $4.50 a QT, which is about the average price of M1. </TD></TR></TABLE>

?

I havent used this stuff.