After doing a buildup of my motor, Ive found that I tend to go through oil just about as fast as I go through gas. OK, not quite that bad but close haha. Ive done a compression test and my numbers were very healthy, so Im not too worried about it right now. But I decided to change oils anyway and see what happend.

I was running 10w 30 Mobil 1 and was losing quite a bit of oil(like everyone else). I was losing a bit more than most, probabl 1 quart every 1000 miles of hard driving in vTaK! yo! I decided to try something else and went with Mobil 1 15w 50. Big mistake! The car ran like complete sh*t and felt totally bogged down and virtually no throttle response. I knew it was a thicker oil but didnt think it would affect the car THAT much. At first I thought I may have just added too much as it was over the top mark on the dipstick, so I figured Id let it burn off and see how it was. Well I went about 300 miles on that oil and couldnt take it anymore, so I changed oil again, this time to Castrol Syntec 5w 30. WHAT A HUGE DIFFERENCE!! The car pulls harder than it ever has, and throttle response is outstanding. Breaking traction like whoa. I really cant believe how drastic the change is. I havent had a chance to check the oil since the change to see how much Im burning off now, but Im sure its probably close to the same as before.

Anyway, just wondering if you guys see similar effects of running different oils.

 

motor attends to perform a bit better went running Motul compare to mobil 1 just a bit but not by much .....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote">10w 30 Mobil 1 and was losing quite a bit of oil

Mobil 1 15w 50. Big mistake!

Castrol Syntec 5w 30. WHAT A HUGE DIFFERENCE!!</TD></TR></TABLE>

Sounds to me like the difference was probably because you switched to the 5W30 viscosity that Honda recommends, not because of the brand.

 

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

Sounds to me like the difference was probably because you switched to the 5W30 viscosity that Honda recommends, not because of the brand.</TD></TR></TABLE>

I wasnt trying to emphasize one brand being better than the other. Sorry if it came across that way. I was more interested in the different viscosities and what the ITR seems to like better.

 

i always used 5-dubya 30 in my honda (mobil1 synthetic) with great success

however, the turbo galant gets the thick 15w-50 stuff

 

I used 5W30 Redline for the first two years of the car's life with no burning.

Then I switched to Royal Purple 5W30 just to see if there was a difference. Started burning really fast. Burned 1 quart before the 3000 mile mark.

So I switched to Redline 10W30 and now it burns less, but still burns.

 

I just mobil 1 super sysn 5w30, mine doesnt burn much at all. Revs freely

 

My GSR burned oil pretty bad with mobil 10-30. Had the motor rebuilt and ran Castrol Syntec and never had a problem. I now have 50k miles on my 01 ITR running Castrol Syntec and I don't burn a single drop. We use it in all our turbo Supra's. Stuff works...

 

mobil 1 10w-30 is on the thinner side of the 30wt. scale.

 

5W30 is the preferred viscosity according to the owner's manual.

 

but 10w-30 is more shear stable than 5w-30.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ejprimo &raquo;</TD></TR><TR><TD CLASS="quote">but 10w-30 is more shear stable than 5w-30.</TD></TR></TABLE>

I trust the experts who designed and engineered the car to know what oil is best for it.

 

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

I trust the experts who designed and engineered the car to know what oil is best for it.</TD></TR></TABLE>

Doesn't the Helm's manual suggest 10W30 for hot weather climates?

And just out of curiosity, what weight did RTR run? Does anyone know that?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">Doesn't the Helm's manual suggest 10W30 for hot weather climates?</TD></TR></TABLE>

No, not exactly. The Helm (service) manual and the owner's manual both say the same thing:

Above 20 degrees F, either 5W30 or 10W30 is acceptable; below 20 degrees F, only 5W30 is acceptable. However, 5W30 is preferred at all temperatures.

They say it in a little diagram (temperature chart) and the word PREFERRED is plastered over the entire length of the 5W30 arrow.

 

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

No, not exactly. The Helm (service) manual and the owner's manual both say the same thing:

Above 20 degrees F, either 5W30 or 10W30 is acceptable; below 20 degrees F, only 5W30 is acceptable. However, 5W30 is preferred at all temperatures.

They say it in a little diagram (temperature chart) and the word PREFERRED is plastered over the entire length of the 5W30 arrow.
</TD></TR></TABLE>

I also remember reading somewhere that 5W30 is purely preferred for ULV and ULEV standards when pertaining to Hondas and Acuras.

Any insight?

 

Didn't he say he 'just build it up'. Did it get new Rings or a Hone?

You need to bed to rings in. Otherwise it'll drink oil like a bitch.

I'd have put good dino oil in for the first 10,000Kms. With changes at 2,000 - 5,000 kms at 10,000 Then I'd start using synthic.

I followed this process and I run 0w-40 in the Summer and 10W-30 in the winter.
I live in Australia. My car doesn't use any oil between 10,000 Kms Oil changes. Unless I go to the track. Then it uses a tiny amount (as expected).

Good Luck.

 

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

I trust the experts who designed and engineered the car to know what oil is best for it.</TD></TR></TABLE>

in your owners manual it says that you can use 10w-30 above a certain temperature.

 

I did my first change at 3000 miles with castrol, NOT synthetic, then at 6000 on with mobil 1 5w30. I burn avg 3/4 a can every 3000 miles. maybe you should try mobil 1 5w30 too.... i bet it'd be pretty similar with the castrol syn.

 

breakin your motor with conventional oil.

if your burning a 10w-30 oil something is wrong.

BSeries vtec seems to loose a bit of power when switching over to 10w-30.

Import Tuner dyno tested 10w-30 Mobil1 in a 2000 si and lost 5hp compared to 5w-30 Mobil1. If i remember correctly.

Of course for racing or high temperature use you want to switch to a heavier weight oil because its esentially more durable and will break down less with heat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxtasy &raquo;</TD></TR><TR><TD CLASS="quote">I trust the experts who designed and engineered the car to know what oil is best for it.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ejprimo &raquo;</TD></TR><TR><TD CLASS="quote">in your owners manual it says that you can use 10w-30 above a certain temperature. </TD></TR></TABLE>

But it also says that 5W30 is preferred over 10W30 at all temperatures.

Didn't you read my post, above?

 

yeah i read it but i can say that a 10w-30 conventional motor oil is a better at staying within grade than a 5w-30 because of the extra viscosity improvers used in the 5w oil. i believe than honda "prefers" 5w because it is a default oil. you cannot take what honda says in the manual as the bible. just because you say honda "prefers" the 5w over the 10w doesnt mean that the 5w-30 is a better oil than a 10w-30.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ejprimo &raquo;</TD></TR><TR><TD CLASS="quote">i believe than honda "prefers" 5w because it is a default oil.</TD></TR></TABLE>

Uhhh... yeah, right. A default oil.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ejprimo &raquo;</TD></TR><TR><TD CLASS="quote">you cannot take what honda says in the manual as the bible.</TD></TR></TABLE>

Sure I can, if I want. It's my choice. I can believe what is written and published by Honda's engineers, who designed the car and are the technical experts on how it runs - or I can believe what some guy says on the internet - someone who uses meaningless terms like "default oil" and doesn't even own the car we're talking about. That's my choice. Anyone else here can decide for himself whom to believe and what to do with his car.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ejprimo &raquo;</TD></TR><TR><TD CLASS="quote">just because you say honda "prefers" the 5w over the 10w doesnt mean that the 5w-30 is a better oil than a 10w-30.</TD></TR></TABLE>

And just because some guy on the internet says that 10W30 or 10W60 is "better" doesn't mean that it's true. Furthermore, one viscosity might be "better" for one kind of car, and a different viscosity might be "better" for another kind of car. That's why even Honda's engineers recommend 5W30 for some of their cars, and 10W30 for others.

Here is a FACT: The owner's manual and service manual are written by Honda's engineers and published by Honda, the manufacturer of the car.

Here is another FACT: The owner's manual and service manual for the ITR both say that 5W30 is preferred over 10W30 at all temperatures.

If you want to use something else in your car, go ahead. Heck, if you want to do a "money shift" from third to second at 90 mph in your car, be my guest. You can do anything you want with your car. But I'm going to do what I want with my car, and what I want to do is to follow the advice of the experts who designed and built the car. That's why I use 5W30 in my ITR.

 

My car isn't too picky. It doesn't even consume oil on track (Mobil 1 5W30). Because of this, I can't comment on "power" differences with thicker viscosity oil.

 

There are other things involved with what viscosity that Honda picked for the car. One of those is gas mileage, thinner oil will yield better mileage so if they recommend for you put in 5w10 then they can put a lower number on the window sticker. Also, engine emissions are effected by different oils as well.

And here is yet another variable to throw at you. Mobile recommends using their 0w20 oil for all Honda motors that require 5w20. I found this out when my dad got an odyssey. This is taken in context from the Mobile 1 bottle...

"Mobile 1 0w20 provides outstanding fuel economy and engine protection for vehicles where 5w20 or 0w20 engine oil is recommended. It meets the performance requirements of ford specification WSS-M2C153-H and Honda service fill requirements for 5w20."

So, even though Honda recommends a certain type of oil for your car, that doesn't mean by any means that it is the outright best oil for it.

 

I used Castrol regular oil at my first oil change, 3000 miles, then at 6000 on used 5w30 Mobil 1. After 3000 miles of normal road use, I'll use 3/4 a quart. But say, a 3000 mile road trip, it won't eat a drop, nor on the track.