Hey all

I'm thinking about using Mobil 1 0W-40 oil in my car. Car is a 01 TJ VRX 122,000kms.

How thick/thin is that oil?

Any thoughts on using the oil?

I'd use 10W40 as that what mitsu recommends, it's the thickest that the bearings will allow to go through. Never put any thinker oil in that the manufacter recommends as the bearings are designed to allow that thickness through, to think and the oil never goes through the bearings properly. 0W40 is less protection while driving and thrashing it so more ware will happen.

Sorry but i might seem rude but how thick/thin is 0W-40?

And what about 10W-30

0W40 is less protection while driving and thrashing it so more ware will happen.


Thats completely the opposite to what Mobil say. Are you sure on what ur saying?

I think it goes the higher the first number is the thicker the oil is.:think:

But don't quote me on that.:shifty:

0-40w would be in the synthetic stuff

A monograde is an oil whose viscosity is defined at only one temperature, either high or low. A multigrade must meet both high and low temperature viscosity requirements simultaneously. This makes multigrades an easy and popular year-round choice for drivers who experience hot summers and harsh winters. They are easily recognized by the dual viscosity designation (i.e. 10W-30 where the 10W is the low temperature, or winter designation and the 30 is the high temperature designation). It is the viscosity modifier additive that produces a thickening effect at high temperatures but is dormant at low temperatures.

you'll be wasting your money man. Mobil 1 costs, what, 60 bucks for 5 litres? for nearly half that you can pick up 5 litres of castrol magnatec or pentire HPR10, both of which work perfectly well in magna engines. Personally i would go with the penrite, really good stuff!

Mobil 1 is designed for high performance engines and quite frankly, the V6 in the magna is not even close to being a high performance engine, and therefore there is absolutely no benefit in using it. Others will dissagree no doubt but i have never ever had a problem using penrite HPR10

The thing is that i have always used Mobil 1 in my car and i'm a bit reluctant to switch to semi-syn. I know its a Magna not a high performance car.

I want to know which of the 3 Mobil1 oil would be more appropriate for a Magna thats done 122,000kms.

0W-40
5W-50
10W-30

Please post, even if ur not using Mobil1. For those that use Mobil1 what do you use

Mobil 1 is expensive because of the marketing. It isn't all that special for a "synthetic". Still better than Magnatec and other regular oils and semi-syns.
0W40 is a bit thin. The 0W is really unnecessary as it's meant for much colder winters than we get in Australia.
Most important thing is just to do regular oil changes. Magna engines are fairly robust and as long as the oil is doing its job, there isn't a big difference except for how much you're paying for your oil.
I use HPR10, change every 6 months, before winter and before summer, which works about about 5000kms.

10w 30 in winter and maybe the 5w 50 in summer

i use 5w 40 fully synth (only approved oil for the s/c)

Just one point to remember no matter whether it is synthetic or not it still all comes from crude oil. :confused:

the lower the first number the quicker the oil goes around the engine to protect it from engine wear when first started in the day(when engine is cold), second number is how thick the grade is!

the lower the first number the quicker the oil goes around the engine to protect it from engine wear when first started in the day(when engine is cold), second number is how thick the grade is!

So 0w 40 goes around the engine in 0 secons or none of it goes around the engine? :bowrofl:

The lower number is the viscosity at one temp range, the second is for the second temp range.

I have an article here somewhere I will post up if I can find it which shows the testing conditions for all oils.

10w 30 in winter and maybe the 5w 50 in summer

i use 5w 40 fully synth (only approved oil for the s/c)

Shouldnt that be the other way around? As in summer it'd be hotter so you'd want a thicker oil and in winter it'd much colder so you'd want a thinner oil so it circulates more quickly?
or am i no where on track here:confused:

This should answer all your questions, this was taken from a document I was sent some time ago.....is simple enough

Oil weight, or viscosity, refers to how thick or thin the oil is. The temperature requirements set for oil by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high).

Oils meeting the SAE's low temperature requirements have a "W" after the viscosity rating (example: 10W), and oils that meet the high ratings have no letter (example SAE 30). An oil is rated for viscosity by heating it to a specified temperature, and then allowing it to flow out of a specifically sized hole. Its viscosity rating is determined by the length of time it takes to flow out of the hole. If it flows quickly, it gets a low rating. If it flows slowly, it gets a high rating.

Engines need oil that is thin enough for cold starts, and thick enough when the engine is hot. Since oil gets thinner when heated, and thicker when cooled, most of us use what are called multi-grade, or multi-viscosity oils. These oils meet SAE specifications for the low temperature requirements of a light oil and the high temperature requirements of a heavy oil. You will hear them referred to as multi-viscosity, all-season and all-weather oils. An example is a 10W-30 which is commonly found in stores. When choosing oil, always follow the manufacturer's recommendation.

use 10w-30w (10-30). the lower the number the thinner the oil, 0 is the viscosity (thickness) of water
be very wary of using thinner oil than is recommended..I used to use a 30W multigrade in a old Toyota Hi Ace van with no problems and it ran real good ..I put it into a Volvo 144 and it ruined the camshaft lobes and followers in minutes..literally...had to replace the cam shaft and followers plus get all the steel out of the oil ..lesson learned:badgrin:

http://en.wikipedia.org/wiki/Motor_oil#Grades_of_motor_oil

That explains what the numbers mean in a little detail.

look in the front page of your owners manual and see what temperature range applies to you.
mitsu dont recommend and thinner than 5w (first number)
I believe second number is slightly less relevant and its way beyond normal operating specs.
w40 goes to 40 degrees celsius (ambient temperature from memory)