Discover

Sorry, I know it's another "What oil" question has been asked million times before but could only find a few threads relating to hawk wrx.
Only last week had a genuine blue oil filter and Shell helix ultra 5w30 fully synth (as quoted in owners manual) installed but after visiting a scooby specialist, i was told that oil is "too thin" and not good for the engine.
was told to use Millers 5w40 or a 10w50 as it's winter now??
why does the owners manual state 5w30, if the oil is too thin and not good for the engine?

oilman

iTrader: (9)

Hi,

Is your Hawk wrx standard or modified?

Cheers,

Guy

Discover

Hi engine wise it's completely standard apart from a Vortex catback exhaust.

ZANY

oilman

iTrader: (9)

Hi

I would use a 5w-40 synthetic and you will find those through the link below.

https://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.

That's fine for all year round use in the UK.

Cheers

Tim

Gambit

iTrader: (6)

think it was more to do with better MPG figures

Discover

That's great many thanks.
so the Shell Helix Ultra 5w30 I put in last week, will that be fine for around 4k miles or should I just change it to 5w40 asap?
Also, between the Millers CFS and CFS NT+, what benefit will I see with the slightly higher priced NT+ over the standard CFS?
cheers

Discover

Bump
Still don't know whether to leave or change the oil?

oilman

iTrader: (9)

Hi

The oil in there is fine for normal use, but if you are enthusiastic with it, the oil might thin out a bit too much.

The CFS NT+ has a higher dose of the Nanodrive additives, to reduce friction further and give better performance/economy.

Cheers

Tim

Discover

Many thanks Oilman