mazymus

Hi all,

I was curious to see what you guys like in terms of engine oil. I've read a few threads, and even the amazing engine oil thread (can't find the link) but am still left not knowing which one.

I'm down to motul vs mobile 1, but I've also heard not so great things about mobile 1..

So, between the two (or if there is another clear better one, by all means do share) which one?

Also for a northern cali climate, what grade? I'm thinking 10W30 should be enough given the temps, but perhaps 5W30 to be on the safe side?

This is for a daily driver 2003 Z.

Thanks

JedixSole

iTrader: (5)

royal purple or mobil 1.

terrasmak

iTrader: (8)

Amsoil is one of the best for the VQ, RP is the worst. There are a lot if good ones inbetween. I use Amsoil 5w40 euro the run Mobil 1 euro if in a pinch.

mazymus

Thanks man, I did come across Amsoil, forgot to mention. I'll look into it for sure.

Why the 40? Is that more for racing, or is that also your DD? just want to make sure I"m not getting one that too viscous.

Also, I have the V3 Vortech supercharge on the car, but I don't race with it and temps are always in the 180-190 range.

Thanks again

Dallasmavs92

iTrader: (1)

And where's your proof of RP being the worst? I've been running RP for the past 10k miles, ( no idea what was before ) and it's been nothing but great.

J 0 K 3 R

im pretty sure synthetic oil is bad for high compression motors. synthetic has a lower viscocity which means its thinner (not good) and is probably why people are having oil burning issues. the z is high compression at 11:1 and the owners manual says specifically not to use synthetic oil. i would only use synthetic on 9:1 and under personally. ive seen 12:1 corvettes and high compression bikes blow motors due to synthetic. just cause its more expensive doesnt make it better. i get regular oil by a reputable company like penzoil, castrol, or mobil 1 and i dont burn oil or have any problems.
just in case you (or anyone) were thinking about taking your car to wallmart or equivilant, change the oil yourself every 3k miles. its not hard people, and costs around 40$.

ImWeeZzel

iTrader: (27)

ams oil or mobil 1, that's all I use.

jv350z

iTrader: (6)

M1 0w-40 or the German Castrol Syntec

davidv

iTrader: (2)

Did you just start another Best motor oil thread? Shame on you.

hyuk28719

iTrader: (3)

Using Royal Purple for little bit over a year and seeing no problem.

terrasmak

iTrader: (8)

https://my350z.com/forum/engine-and-...-and-info.html you can also start reading, i didn't even have to search for this. It is stickied.

High compression and not being able to run synthetic . Are you ******* kidding me

VQ35deMax

iTrader: (6)

I have been using Mobil 1 0w-40

JERZ350

iTrader: (2)

I dont know about your areas, but a Costco near me has Mobile1 synthetic for cheap. about $35 for a 6qt case. ~$6 a quart while auto stores are like 8 or 9 bucks a quart. Costco likes to do a lot of $10 off of cases as well, i bought 2 cases at $25 each. Keep an eye out

ocdz

iTrader: (11)

Seriously, never give advice on this again. Ever.

2008_hrthree50z

Im using mobil 1 synth 5w30 and its perfect. Been running great for 7k miles. Its "rated at 15k" but ill change it at 8k

bmccann101

iTrader: (16)

royal purple is a race oil that contains little to zero detergents.. your engine will carbonize fast as sh3t and youll pay more for oil..

ah the bliss of ignorance.. " it seems fine to me?"
this thread will be so full of pure opinion its going to get redonk fast haha. wait..

I just read above a few posts.. it already did get redonk.

djamps

iTrader: (1)

So much fail in this thread it's maddening. Could a mod lock or preferably delete it?

DaveJackson

iTrader: (5)

I use Mazola. It's the best.
Corn oil + E85 is a combo that can't be beat.

mazymus

Well, thanks guys for your opinions and advice.

I mainly wanted to see if there was anything bad per se by going the Mobile or Motul route.

For example, I have used the MOTUL 8100 5W-40 X-cess Synthetic Engine Oil the last time around, but read that Motul can be a more viscous vs Mobile one, and therefore on colder temps not as good.

Anyways, didn't mean to start a crap tread, but was honestly curious and looking to get some advice

tquill

iTrader: (15)

That oil analysis thread that posted earlier would be the best start. If you're ever inclined to do so, you could always get your oil tested for comparison. It costs about 25 bucks if I remember correctly.