What is the BEST oil to use on a 6A12 MIVEC?

spetz · Post by **spetz** » Fri Dec 09, 2005 5:36 pm

I know this has been covered but this one is different.

What is the absolutely BEST engine oil to use on these engines?

Ignoring the fact of how many km on the engine.

Lets say the FTO was just bought from Mitsubishi brand new, what is the best engine oil to use in it from day one with the following variations in temperature:

A) 0-15 deg C
B) 15-30 deg C
C) 30+ deg C

So, what viscosity, what brand, which oil series etc

PS. Only technical explanations and none of the "I use XYZ and I am really happy with it"

Thanks for the input guys

SchumieFan · Post by **SchumieFan** » Fri Dec 09, 2005 7:09 pm

I use Shell Helix 10w40 and i am really happy with it

Post by **Bennoz** » Fri Dec 09, 2005 8:10 pm

Use Penzoil Semi Syth 10W-40W. Cant fault it.

spetz · Post by **spetz** » Sat Dec 10, 2005 1:08 am

Sorry guys but if you read the original post it states that only technical answers should be given not what people use and are happy.
Like, what viscosity is best in what weather conditions, driving conditions, mineral or synthetic

Basically something that has a valid arguement behind it of why that particular oil should be used on the FTO V6 engine

devil2004 · Post by **devil2004** » Sat Dec 10, 2005 2:51 am

oilman from www.ftooc.org have a great explaination on the UK site. too lazy to copy n paste for you. hehe..

EURO · Post by **EURO** » Sat Dec 10, 2005 9:59 am

From what I have been explained.... and have posted before....

If an engine has been rebuilt or brand new often they will use a slightly thicker oil for the first X amount of kms... something like 15 - 50 for example... purely for protection.. then then dump that oil very quickly..

Once the engine has been run in, the mitsubishi manual states to use 5w-30. Because the engine is a free and high reving engine, you want a low viscocity oil. I was recommended to use castrol synthetic or mobil 1. I guess you look at porsche and they always tend to use ow-40 or 5w -30. Having a thicker oil (i was explained) places more strain on the seals etc...e.g. more pressure to push out against the seals...

In terms of weather... I could be wrong here.. but bascially the w means winter... 5 will be the viscocity of the oil at starting point and 30 will be the viscocity once the engine is at running temp.... in terms of what oil to use in winter and summer.... i was told that wasnt really an issue (for melbourne at least) and to always use 5w - 30.....

this mechanic showed me a list of manuals from ford and holden etc, and said since the late 90s all of tehm have changed to 5w-30...

spetz · Post by **spetz** » Sat Dec 10, 2005 1:15 pm

5w-30 makes sense on the FTO engines as I am quite sure VTEC YO!!!!! engines are supposed to use that viscosity as well

As far as winter/summer oil goes I am sure there would be a difference.
Considering that say with an oil cooler in summer the oil should be around 90 deg C and in winter even without an oil cooler the oil would probably only reach 60-70 deg C with average driving
So technicaly I am guessing that the car would need an oil that at those oil temperatures it is as thick/thin as "needed"