Hi,

spring is here and i have to do a complet flush of fluid on my track car. I used to have a turbo sentra and oïl was really important on that car on the track....so do my 2003 350Z.

So, i have a lot of mileage on the car and engine (around 200 000km) and my engine will be replace next year (if not before ) and i'm still trying to find the right oïl for this car.

So what kind of oïl do you run on the track ? 5w30, 10w30, 0w40 ??? And what brand do you like ?

Did'nt like Amsoil and April !

Thanks alot,

Martin

 

Street or track: Mobil 1 0W-40.

 

30 or 40?????????

 

What did you not like about amsoil?

 

Too thin for my turbo. Even with a big oil cooler, my engine was running really hot VS Mobil, Vavoline or Motul.

Even the sound of the engine was diffenent.

Motul was nice, but not the 300V, not good for turbo car like my sentra.

Mart

 

Mobil 1 0W-40.

 

To thin? Doesn't seem to make sense to me am I missing something why don't you try a different weight? Using the amsoil 15w - 50 in our turbocharged track car not a z.

 

What about that rotella? 5-40 or something like that weight.

 

Mobil 1 0W-40 here too.

 

Wow, unanimous decision.

The funny things is that i have 0w40 mobil in stock....for the GT-R

So ill let you know in 2 weeks !

Martin

 

It was before a event and i need oil quickly so i try Amsoil 5W30 because it was the one one available but since my Sentra was running hot, the mix of 5w30 and my car wasnt a great match.

5W30 is the only grade available near me in Amsoil. It had to have good oils ship from the USA...like almost all chimicals actually...and battery.

Mart

 

i use motul 15w50 or shaffers 9000 15w50

 

I'm probably going to try 5w40 rotella again in my SC Z. Didn't have good luck before but also my valve covers were pouring. Used it 3k miles and somehow burnt a qt

 

Eneos 5w30 - summer, Eneos 0w30 winter

Amsoil 5w30 summer, Amsoil 0w30 winter

Did multiple oil analysis with these two oils and they are nearly identical with slight edge to Amsoil,

Switching from mobil1 to amsoil my oil analysis showed that I reduced a significant amount of wear and tear metals in the engine oil - meaning that there is less internal friction and the engine will last much longer.

 

Are your mileage intervals identical? I'm also guessing your NA? Iv heard great things about eneos bc I guess the German formula blah blah

 

Identical intervals were done, I have pdf's on my laptop.

basically did 5.5k miles on amsoil, eneos, mobil1, 2 cycles each oil.

That was done on my stock HR with fujitsubo exhaust system w/ stock nissan filters.

Amsoil and Eneos were about the same, only slight difference in some common friction byproduct metals, really negligible.

I didn't even want to run mobil1 second time because of how horrid the first UOA came out, but I did it anyway for science sake.

This was all done in FL, over 2 years.

According to bobistheoilguy mobil1 basically is being cheap and not adding enough oil base friction modifiers, causing much less protection vs comparable synthetics.

I heard good things about castrol edge synth too tho.


-Lets face it though; even running mobil1 in your engine, one will most likely trade the car in/ move on before the engine gives out.

For me just knowing psychologically that I am running the good stuff that actually works (backed up by data) makes the drive that much more enjoyable.

 

I agree a with you 100%

 

For the last 2 years I have been running strictly Castrol Edge SPT 5w-40 in my 06 Z.

My car has 180,000km and runs great. During track conditions I didn't have any concerns over heating or oil pressure so it's doing something right. YMMV

 

honestly like it was mentioned before you could run your Z on dyno oil 5qts for 14$, would it run? Heck yes.

Would it last a while? yes if you followed oil change intervals

Would it be good for your engine long term? Most likely not.

According to a recent NHTSA reprorts over 50% of the cars on the road in united states are either low on oil or haven't changed their oil in the past 2 years.

So really, as long as you put in a synthetic oil and you change it when its due... can't go wrong with any SAE certified oil.
It's just us gearheads who like to pamper our cars will put the best stuff in.... or at least I know I am.

 

from what i've researched a while back, i know someone from this forum sent different oils to the lab (blackstone?) for analysis. The conclusion was that M1 0w-40 is comparable to Amsoil (forgot the grade) and is readily available just about everywhere, but M1 5w-30 was horrible. So i take that as different grades performs differently even if it's made by the same manufacturer.

I've used M1 0w-40 ever since I bought it new. Still uses it now that the Z is being driven at the track almost exclusively.