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Old 27-03-2017, 05:14   #1
hbkuk1
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Evo x engine oil?

I know I know oils are always done to death
My question tho is Mitsubishi say 5w30 so why do all the specialist garages use 10w50? What's the reason for that? And what do you use and why?
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Old 27-03-2017, 08:30   #2
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I have the same thing from [email protected] when I asked him about my oils.
His answer (as well as every other tuners garages) is that 5w30 is "too light". Which imho too simple an answer in the context that spent millions in R&D on the 4b11t.

Ben ([email protected]) will definitely have a definitive answer. I'll defer to him.

Ultimately I believe it is all down to cost, of them bulk buying in barrels vs which cars use 5w30 or 10w50. Evo X is the only car then uses 5w30, whereas the rest of the range the book says 5w40 / 10w40.

***

5w vs 10w - refers to the lubrication at cold temperatures or cold start. 5w is rated to -20c, 10w is up a little at -10c. In my case, South England doesn't get that cold, no particular need for 5w.

Every tuner will ask you, what your engine start routine is (Rich did). If you start the car, let it warm up for a few mins, until the temp gauge registers, then you also don't need the 5w protection, which is what build in against the madhatters who go WOT on a cold engine.

You can see this on Cold Crank Viscosity 6600 vs 7000
5w30 http://www.millersoils.co.uk/automot...tor=Motorsport
10w50 NT http://www.millersoils.co.uk/automot...tor=Motorsport

Next point - that tuners like to comment on the age of the engine, referring to wear and tear of the piston seals. The argument of heavier grade oils help vs lighter ones. This is usually argued with modified cars also run hotter. e.g. A FQ360 has the same oil cooler as a FQ300. At load with 60bhp more, the oil runs hotter, thus technically needs 5w40 vs 5w30.

From what I know the rest the evo range 6,7,8,9 the manual says 5w40. When tuners mod those engines, they technically should specify 5w50 for the additional heat, but 5w50 is rare, not many manufacturers make it for various reasons. As cold temp lubrication is moot (weather/cold start routine) - 10w50 is used instead, which every manufacturer makes, creating lots of price competition. Thus I see Rich has a barrel of Millers 10w50 in his garage. (His favourite brand is Millers, e.g. the links I posted.)

Our manual that came with our FQ330 is the FQ300 one, remember UK imported the 300s and made dealer options for the 330 (without changing the manuals. It can be argued that the suggested oil should be 5w40.

There's lots of competition grade 5w40 oils.
5w40 NT http://www.millersoils.co.uk/automot...tor=Motorsport
but hardly any of the 5w30. (At least not from Millers)

The above is speculation, with enough laymans fact to make it dangerous But as long as your garage monitors the health of your oil pump and uses the appropriate oil filter for 10w50 with an explanation of why they chose that grade - as long as I do a little homework to check - I'm not going to second guess someone who has vastly more experience than me.
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Old 27-03-2017, 12:20   #3
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My X400 uses 10w50 " as recommended by mitsu" i use millers cfs nanodrive

The oil pump on the X is a "low friction Gear type oil pump" and it will handle high viscosity "10w 50 as an example" oils with ease.

I would ask a specialist of your choice on what grade they recommend or give tim at opie oils a bell.
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Old 27-03-2017, 12:48   #4
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Good info thanks both I just feel 10w50 is a heavy oil like what we used to put in minis
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Old 28-03-2017, 11:57   #5
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Hi

Is the car standard or modified? Does it go on track? Any idea how hot the oil gets when driven hard?

Basically, you want an oil that is thin enough to flow properly, but not so thin that it will increase wear.

As the standard grade is 5w-30, I wouldn't go for a 10w-50 unless the engine was fairly modified, the oil ways and tolerances of the engine are designed for a thinnish oil, so putting something thick through it would reduce flow. Generally, I would use a 5w-30 or 5w-40 in an Evo X, unless it was running a fair bit more power than standard.

Cheers

Tim
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Old 28-03-2017, 16:55   #6
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Hi

Is the car standard or modified? Does it go on track? Any idea how hot the oil gets when driven hard?

Basically, you want an oil that is thin enough to flow properly, but not so thin that it will increase wear.

As the standard grade is 5w-30, I wouldn't go for a 10w-50 unless the engine was fairly modified, the oil ways and tolerances of the engine are designed for a thinnish oil, so putting something thick through it would reduce flow. Generally, I would use a 5w-30 or 5w-40 in an Evo X, unless it was running a fair bit more power than standard.

Cheers

Tim


391 no track action as yet much more for road use
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Old 28-03-2017, 19:26   #7
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Originally Posted by hbkuk1 View Post
391 no track action as yet much more for road use
I changed to titan race x 5w-40 just before I had mine mapped. It's a much better oil if you are running increased bhp. Quite a few threads on here recommend this oil also.

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Old 28-03-2017, 20:35   #8
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Titan 10W50 here, modified car though
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Old 29-03-2017, 13:31   #9
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Originally Posted by hbkuk1 View Post
391 no track action as yet much more for road use
Like TurboShandy, I would use a 5w-40 in that

http://www.opieoils.co.uk/c-656-5w-40.aspx

Out of those, the best ones are the Fuchs/Silkolene Pro S, Millers CFS/CFS NT+, Motul Sport/300V, Red Line and Gulf Competition. The Motul 8100 X-Cess, Millers XF Longlife, Castrol Edge/Magnatec, Fuchs GT1 XTL/Supersyn, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.

Cheers

Tim
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Old 29-03-2017, 14:10   #10
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5w40 it is then will order later thanks
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Old 29-03-2017, 17:45   #11
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Like TurboShandy, I would use a 5w-40 in that



http://www.opieoils.co.uk/c-656-5w-40.aspx



Out of those, the best ones are the Fuchs/Silkolene Pro S, Millers CFS/CFS NT+, Motul Sport/300V, Red Line and Gulf Competition. The Motul 8100 X-Cess, Millers XF Longlife, Castrol Edge/Magnatec, Fuchs GT1 XTL/Supersyn, Shell Helix and Mobil Super 3000 are good, cheaper alternatives.



Cheers



Tim


Ordered with some other stuff
Thanks for the help
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Old 29-03-2017, 18:57   #12
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This is a perennial kind of MLR debate. The conclusion I've reached is that it's very unlikely that you'll encounter any problems as long as the oil you use is of good quality and is changed frequently. My tuner of several years, who did all his own engine building, and had a very succesful record, using 15w50 in every Evo he serviced and/or looked after right up to 1000hp monsters. But if Mitsi say a 5w30 is ok for a regular Evo X then it will be just as ok as any of the other grades.
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Old 30-03-2017, 08:08   #13
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Ordered with some other stuff
Thanks for the help
Hi

Thanks for the order.

Cheers

Tim
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Old 22-12-2017, 16:05   #14
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Hi

Is the car standard or modified? Does it go on track? Any idea how hot the oil gets when driven hard?

Basically, you want an oil that is thin enough to flow properly, but not so thin that it will increase wear.

As the standard grade is 5w-30, I wouldn't go for a 10w-50 unless the engine was fairly modified, the oil ways and tolerances of the engine are designed for a thinnish oil, so putting something thick through it would reduce flow. Generally, I would use a 5w-30 or 5w-40 in an Evo X, unless it was running a fair bit more power than standard.

Cheers

Tim
Hi Tim

I'd appreciate some help.

Let me give you some background info.

My evo X SST is stock, I'm based in Athens, Greece with mild to warm climate, summer temps can reach 40C-43C occasionally (no more than 1-2 weeks), winters (1-2 months tops) are minimum 0C maximum 15C, but mostly temps are above 10-15C for about 3-4 months rest of the year are over 15C max 43C.

Used as weekend car for fast coastal, mountain drives. Probably will track it 1-2 per year. Odometer is 57K km.

I've read that generally 5w40 is recommended, which also makes sense for our ambient temperatures in Athens so I opted for this instead of factory recommended 5w30.

I just put in 5w40 8100 x-cess, question is if I should continue with this or change to 300v or even to Castrol fst 5w40.

Cheers and thanks for your help in advance.

Nikos


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Last edited by Nikos!; 22-12-2017 at 16:08..
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Old 23-12-2017, 08:51   #15
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Does anyone know what kind of operating oil temps it's normal to see with a standard 4B11T engine? My guess would be in the 70-90 deg C range.
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