Genuine Nissan 7.5w30 engine oil

[rs73]

oh sorry I didn't see your first post. dun worry about my question.

[steven]

Mine's sits around 6 when cold in the morning, 2 when it's warm, and up to 6 when acceleration hard. I guess it's pretty normal(if i'm wrong, please correct me).

However, 7.5w-30 isn't it too thin for turbo car? Because as i knew most of the car magazine they reckon 10w-50 or 15w-50 is the best oil rate for tubro car. And at the moment i'm using Motul 300V 15-50, it's work great. Haven't had chance try other oil like 5w-30. What do u guys think?

cheers

[arelh]

on my R32 GTR I run Motul 300V 15W-50 - W/Shop manual sez (oil temp 80deg) 1.5 @ 800, 3 @ 2000,4.6 @ 6000 and thats exactly what mine shows - BTW the nismo oil is the same only twice the price

[Cubes]

Also remember that the 7.5-30w oil is recommended for normal operating conditions.

Not flat stick through the hills.

30w oil is known to be a little too thin for a modified car.

For Aussy conditions you are better off with a 5 or 10w - 50 or 60w oil.

[knore]

30w would be really thick though...

[siksII]

30w would be really thick though...

??? am i reading correctly... 7.5/30 is thin!

[Cubes]

knore,

30w being the once warm vis. not simply a monograde 30w engine oil.

I'll reword it...

7.5w-30w oil is known to be a little too thin for a modified car.

Well amongst the tuners it is anyhow.

[steven]

i also think 30w is too thin for tubro car, but wonder why most of the top rang oil is use 5w30, like Motul 300V racing oil, and ELF 5w30 racing, and HKS oil too? Anyone could explain why?

cheers

[JimX]

Because the thickness of oil doesn't determine how well it protects your engine. Unless your engine is excessively worn and the clearances are a little bigger, in which case thicker oil will help "take up the slack". But people have a misconception that thicker oil=better engine protection, which isn't necessarily the case.

There is no problem with 5W-30 oil if your engine is brand new or in good condition, and it's not making ridiculous amounts of power. I only started getting problems with my car after I switched to a heavier oil. Now, I don't know whether it was the Castrol or the Motul that caused problems, or even if the problem would have happened anyway. But I'm now having to switch to 15W-50 oil to help protect the potentially worn lifters. I think the only other things I'll notice is decreased power and economy.

[Cubes]

One thing my engine builder said...

With this new engine once you start on a oil stick to it. Fiddling with different oils in turn contain different properties (detergents etc) is not good for the engine.

[wreckedhead]

has anyone tried castrol R for modified cars, ive been usuing it every 2-3000 ks, everytime i do an oil change its still very clear oil, i know you dont have to change it so often, but 100 bucks a month isnot gonna kill me to change the oil.

i think personally from a lot of people i sopke to, it seems to be one of the best oils u can use in a turbo engine. $80 for 5 litres

[Pekatu]

I used castrol R 5w-30, it only cost me $45 for 5 litres, it seems ok, i was looking fror some motul 300v, but could not find anywhere that stocked it!

[WHITE R32]

i use the motul turbo light 4100........ it seems okay but oil pressure seems low.... been thinking about going a bit thicker cause i have reasonably high power output and i give the car a pretty hard time on the dyno and at track days.... does it seem that going thicker is the way to go for me and what should i go to ?? 15/50??

[red17]

 

Well amongst the tuners it is anyhow.

I think you'll find this isnt the case. I know of 3 tuning houses in perth all using 10W/30 or 7.5W/30, it is very much common practice on many Nissan engines, turbo or not.

Ive used both 30 and 50 weighted oils in my old SR20 and I know that it ran better on the 30.

Ive been told to use what Nissan reccomend for the motor regardless of power outputs. There are many things within a motor which are accustomed and designed to operate with a specific thickness of oil (lifters, squirters, galleries). Too thick and your making it work harder, plus oil isnt flowing as freely and extensively through oil galleries. Too thin and obviously your going to damage the motor via greater frictional wear.

Red17

[knore]

Good point.

But logically, if your making more power - Thus creating more heat and strain on the engine;

Then u need a stronger or different oil

[JimX]

One thing to remember about oils is they lose viscosity as they get contaminated. So if 5W-30 is on the borderline of thickness when new, by the time it's done 5000km it might be a tad too thin.

There is no harm in running a thicker oil to a certain extent. A 15W-50 oil is fine. It certainly isn't "too thick" to run through the oil galleries. If it works when cold then it will work when hot no matter how thick. ALL oil thins as it heats up, some people mistakenly believe that oils with a high hot weight will get thicker as it heats up. Even a mechanic I spoke to told me once that he said that a 15W-50 would be too thick for my engine, but a 15W-40 is fine. This is clearly wrong.

The only thing you stand to lose with thicker oil provided it's not overly thick is a bit of power and economy. In my experience, any oil with a 15W cold weight or less is fine on Skylines, which means that it doesn't matter how big the hot weight is. Having a hot weight bigger than 30 though means your oil can stand to lose a bit of viscosity over time and still be higher than 30.

[fooey]

I was told to use Mobil 1 5/50 but its a bit pricey ($65/5 Litres) to keep changing every 5000k... and wouldn't mind going for a cheaper (but don't really want to get something thats inferior) oil instead.

[QuickR33Melb]

Auto Barn have started to stock an import specific oil designed for our import cars. I can't remember the name but it was about $70 5L and it has is fantastic stuff. Just ask the sales rep. I was told this oil is used by NISMO for all there drag, drift and racing imports

[GTST33]

Hi guys might be a dumb question but need to know, can you buy Motul 300V 15W-50 and Motul 4100 from anywhere or do you need to go to a specialised shop to purchase it?

[_turtle_]

GTST33, just grab it from autobarn, its around 30-40bux.