ryn004

I was using Motul 8100 5W-40 - 100% Syntetic and my mechanic reckons its too thin for the age of my engine and may be the result of the engine running a bit rough lately.

So what engine oil do you recommend?

pslewis

Do you get 10W-40 Semi in Malta?

Because that's what you need.

Forget expensive marketing hype stuff, pay £15 for 5 litres and change every 6 months - sorted.

n8i

iTrader: (3)

hi

my wrx always got some cheap 15W40 or 10W40, never raced her.
the better solution would be 10W60, favourized by German Subaru forums...

cheers
Nico

my94wrx

iTrader: (4)

as above i have always run mine on 10w-40 semi originally vauxhall oil then when I couldn't get it cheap enough i used halfords own 10w-40 semi

magneel1

iTrader: (18)

I believe MOBIL1 15 50- Fully Synthetic is recommended

pslewis

Double Post............

pslewis

60 is WAY too thick - it's like Treacle!! Don't do it unless you are racing or rallying!!

dj219957

another vote for halfords 10w40 semi. just done mine today with a gen filter.

pslewis

Absolutely no point buying silly priced stuff ..... keep it simple

ALi-B

iTrader: (1)

For the climate in Malta and if you like to use your right foot a bit, then I think you should look at 5w-50 or 10w-50, brand is just subjective, as both grades will be synthetic by default due their broad viscosity range.

5w-50 is quite common in hotter parts of europe, but is rarely found on the shelf in the UK (its too friggin' cold here)

If the engine is sounding rough, different oil won't fix it. It may mask a possible underlying problem; but a different oil will not magically erase all the previous miles of wear and tear.

ryn004

Think I'll try the 10-40W semi synthetic oil. Was using the fully synthetic because it was mentioned in the manual.

TonyBurns

iTrader: (3)

You could try a 10w50, as said though, if the engine is running rough its doubtful that its the oil.

Tony

ryn004

Well the engine preforms the same, just since I drive it daily I noticed the different tune in the engine. Initially thought it was something with the exhaust, but had it checked.

pslewis

I had a Calibra once ... a 16V RedTop Engine, sweet unit.

Anyway, someone said that 50 would be good for it ... what a mistake that was!!!

It just sounded like a bag of spanners, seemed sluggish to rev, all in all a disaster!

Changed it once more for a 5W-30 I had used previously .... the sewing machine smoothness was restored immediately - the oil can have a massive effect on an engine.

No need to use 50 or 60 in any engine unless it's use calls for such treacle.

peteluc

its normally the hydraulic lifters that require a certain grade of, to thick and you wont get full valve lift (like zetecs).

Is 10/40 semi really recommended for turbo subarus? surely a fully synthetic 10/50 (eg mobil1) would be better for a turbo charged engine?

TonyBurns

iTrader: (3)

10w40 is recommended, as per most cars, tried and tested on subaru engines with no adverse effects.
Shell helix 10w40 semi synthetic is the recommended oil of Subaru for the Impreza turbo/sti and wrx's.

Tony

basssound

bough a genuine oil filter for the turbo 2000 and was advised to use either 5w30 fully synthetic or 10w40 semi synthetic

TonyBurns

iTrader: (3)

Whoever advised you to use 5w30 should be shot as it has a BIG warning in the handbook about its use, go no lower than a 5w40 fully synthetic.

Tony

topshot

iTrader: (4)

i use 10w50 Silkolene, engine has just done 84k doesnt use a drop of oil between changes.

I dont like the idea of buying cheap oil, you get what you pay for

topshot

iTrader: (4)

There is on turbo cars, especially modified ones that get driven hard

tathan

I can't see any way that a semi would be better than a full ester. It's cheaper but that's it.

TonyBurns

iTrader: (3)

You can use a 50 weight but seriously recommend against a 60 weight oil.

Tony

basssound

****s sake, just filled her up with 5w30 fully syn, best drop it tomorrow and use some 5w40!!

dj219957

yes there is a warning in the service manual "5w30 is not recomended for sustained high speed driving" which in my mind also means its no good if you like to thrash the car a bit.

basssound

i'll buy some more tomorrow, thats £28 down the fricken drain!

dj219957

halfords stuff is £21, its been used in my scoobies for years. at least you wont need to the change the filter and think of that oil as a good flush though. it means your new stuff will not be contaminated so quick.

peteluc

The idea of fully synth is that it doesnt get broken down by the extreme turbo heat and end up as sludge in the oil pick up pipe.

I guess 10/40 semi is fine if you change it often enough..

pslewis

10W-40 is perfect if changed at the allotted time.

And the only thing expensive oils do is empty your bank balance!

tathan

I'll bite...

But they last longer and are more stable - the long chains in semi will break down under hard use into shorter ones and you'll end up with oil that's not doing what it's supposed to i.e. it stops being multigrade and becomes too thin under abuse. So if you do change more often, THAT empties your bank too, and you don't have the best protection anyway.

It's like saying this leech is perfectly good because it was state of the craft 400 years ago. Well you stick to leeches Pete, I'll have some penicillin

pslewis

Last longer?

Longer than what? 6 months? 12 months?

My Service Interval is 6 months - it gets changed then as per Subaru's recommendation.

So, paying through the nose for a longer lasting Oil is utterly pointless (as the benefits will never be felt).

It's like buying a long life gob-stopper - even though you always spit them out after 5 minutes!!