Subaru Forester Owners Forum banner

1 - 17 of 17 Posts

·
Registered
2008 Forester XT Sport 4EAT
Joined
·
1,663 Posts
Wait, is Subaru UK recommending 10W-50 oil? That's the first I've seen of that.

EJ engines over here are recommended to use 5W-30.

I use 5W-40, but I'm about to try 0W-40 for the winter.
 

·
Registered
2008 GRB 20th anniversary 6 MT
Joined
·
6,575 Posts
Discussion Starter · #4 ·
A lot (if not all) Subaru specialists recommend 10w-50; it is also mentioned in the document.

Garages usually buy one grade of oil in bulk for cost saving, best to use what you think is best for yor own engine.
 

·
Registered
2015 Fiat van Man stick
Joined
·
4,808 Posts
I have no idea what they put in mine. Probably the cheapest bulk buy they can get.
 

·
Registered
2004 FSTI 6 MT
Joined
·
140 Posts

·
Registered
99 UK S-turbo
Joined
·
8,566 Posts
10w50 may be recommended, but why........I suspect many don't really know.
 

·
Registered
2008 GRB 20th anniversary 6 MT
Joined
·
6,575 Posts
Discussion Starter · #8 ·
10w50 may be recommended, but why........I suspect many don't really know.
Indeed. I suspect for a higher mileage car, a forged engine or one that is used hard on the track it makes sense.

I stick to 5w-40 in mine although I have used 10w-50 in summer and during trackdays.
 

·
Emeritus Forum Staff
2015 Triumph Tiger XCx 1 Down. 5 Up.
Joined
·
5,242 Posts
Indeed. I suspect for a higher mileage car
This is what S4U claim.


i thought we were supposed to use 10w40?
I'll probably be flamed for saying it but the most important thing is that it's good quality, high ester, fresh and there's the right amount of it IMHO.
 

·
Emeritus Forum Staff
2015 Triumph Tiger XCx 1 Down. 5 Up.
Joined
·
5,242 Posts
She'll helix hx7 every 3500miles
Pah, I put fresh oil in the X3 every 450 miles or so....











...about 60 litres of the stuff! :biggrin:
 

·
Registered
2008 GRB 20th anniversary 6 MT
Joined
·
6,575 Posts
Discussion Starter · #13 · (Edited)
Yes I change the oil every 3,000 miles.
I stopped using Shell Helix Ultra (only used it twice) ever since I had it analysed and it was found to be oxidised.
It only reached 103C or so, so I can't explain.
Stick to Fuchs/Silkolene/Titan since then and it is fine.
 

·
Registered
2015 Fiat van Man stick
Joined
·
4,808 Posts
Bejesus! If I changed my oil every 3k it would be done nearly every other week! Three services a year is plenty for me.
 

·
Registered
98 sf - gls manual
Joined
·
1,119 Posts
i use silkoline in my bikes, good stuff.
my fozzy is a na
i use anything on offer :D
 

·
Registered
99 UK S-turbo
Joined
·
8,566 Posts
I was using castrol Edge 0W30 and changing every year (about 12K miles), hardly any point paying for all the additives if you change the oil before they have a chance to be needed, engine was at 156K miles and running perfectly with regular excursions into the redline.
 

·
Registered
2004 Forester Sti 6 MT
Joined
·
723 Posts
JDM Manual for Forester STI:

SUBARU :

Full manual download here:
http://www.subaru.jp/afterservice/tnst/pdf_forester/1/all.pdf

5W30 for Turbo Foresters including STI
0W20 for Non Turbo
10W50 Elf for Hard use or hot climate

My last service I was offered 10W50 which seems a bit overkill especially for winter.

Actually when I do my own oil I use 0W30 Shell Helix Ultra as it has excellent shear properties (better than some 40W and 50W oils) and will give good cold start performance, plus is often on special offer.

I know this is 'controversial' as somehow 0w30 is thinner than 10W30, well ...yes it is at startup when you want it to be thin.

I do use a 40W oil for track use tho but could go with a modern 30W as again the protection a modern synthetic low weight oil gives is pretty amazing.
 
1 - 17 of 17 Posts
Top