What oil to use for sti ppp

[scoobyPPP]

Can anyone let me know what the best oil to use on a sti ppp is, my Subaru dealer has told me that castrol magnetec 5w40 is what they use, cheers.

[markCSC]

Hmm I would go for a fully synthetic oil. Try Castrol Edge

Also have a look at http://www.opieoils.co.uk/ they will recomend an oil for your car.

Mark

[ScoobieWRX]

Last year Subaru HQ issued a bulletin to UK subaru dealers to start using 10W40 semi-synth instead of 5W30 semi-synth they always used. Opie oils will quote you 5W40 Fully Synth. Popular in the modified Subaru scene is Millers 10W60 fully synth or Motul 300V 10W50 fully synth. I've been told by another independent oil only stockist that 20W50 fully synth is the beez neez although few oil dealers stock this.

It's horses for courses really. I would have to say that on a PPP scoob you won't go far go wrong with a 5W40 or 10W40 fully synth oil. If your scoob is heavily modified then something more in the lines of 10W50/60 fully synth is the way to go.

[Marf]

markCSC said:

Hmm I would go for a fully synthetic oil. Try Castrol Edge

Is castrol edge truly synthetic, or a hydrocracked mineral oil?

[Syndrome]

Don't use fully synthetic oil unless you are using it for a track day and intend changing back to semi synth afterwards. The fully synthetic stuff rots piston rings much quicker, and probably rots other seals as well.

[Marf]

Syndrome said:

Don't use fully synthetic oil unless you are using it for a track day and intend changing back to semi synth afterwards. The fully synthetic stuff rots piston rings much quicker, and probably rots other seals as well.

Come again?

[Syndrome]

Marf said:

Come again?

There's anecdotal evidence to suggest that using the fully synth ester based oils permanantly, reduces the life of the piston rings noticeably. The fully synth stuff is fantastic for race engines which get rebuilt routinely, not so great in a road car engine, day in day out. The semi synth stuff is nearly as good and hasn't got quite such a negative effect on engine seals.

[Marf]

Syndrome said:

Marf said:

Come again?

There's anecdotal evidence to suggest that using the fully synth ester based oils permanantly, reduces the life of the piston rings noticeably. The fully synth stuff is fantastic for race engines which get rebuilt routinely, not so great in a road car engine, day in day out. The semi synth stuff is nearly as good and hasn't got quite such a negative effect on engine seals.

Sounds like a load of internet originated tosh to me.

I used fully synth(Silkolene ProS/R) for over 50,000 miles on my last car which was a heavily modded turbo engine running 25psi. The engine was rebuilt at the beginning of my ownership and consistently pulled 150psi when compression tested from the end of the run in period to when I sold it and never leaked a drop of oil.

[markCSC]

Marf said:

Is castrol edge truly synthetic, or a hydrocracked mineral oil?

Hello

Fairly sure it is a synthetic ester oil

[markCSC]

Syndrome said:

There's anecdotal evidence to suggest that using the fully synth ester based oils permanantly, reduces the life of the piston rings noticeably. The fully synth stuff is fantastic for race engines which get rebuilt routinely, not so great in a road car engine, day in day out. The semi synth stuff is nearly as good and hasn't got quite such a negative effect on engine seals.

I read ages ago about synthetic oil damaging rubber oil seals because it didn't have the correct additives, but this was aaaaaaaaaaaages ago and since then the additives have been added. Never heard of it damage piston rings, can't see why a company would sell oil that buggers your engine.

[scoobyPPP]

Sorry guys it was 10w40 that i was suppose to write that subaru reccomended

[opieoilman]

scoobyPPP said:

Can anyone let me know what the best oil to use on a sti ppp is, my Subaru dealer has told me that castrol magnetec 5w40 is what they use, cheers.

A good 5w-40 or 10w-40 synthetic is ideal, in winter months the 5w will be better then a 10w as it will flow better from cold.

The Castrol Magnatec is sold as a synthetic but it is infact a hydrocracked mineral oil (the better half of a semi synthetic!). We tend to recommend and find most popular the true synthetic 5w-40 oils, these of course cost more but then they are better. Popular at the moment is the Silkolene Pro S, Motul 300v, Redline and Gulf Comp - you can find them here http://www.opieoils.co.uk/c-953-ester-synthetic.as...

Cheers

Guy

[opieoilman]

Marf said:

markCSC said:

Hmm I would go for a fully synthetic oil. Try Castrol Edge

Is castrol edge truly synthetic, or a hydrocracked mineral oil?

Edge is PAO synthetic, but not ester based.

Cheers

Guy

[opieoilman]

Marf said:

Syndrome said:

Marf said:

Come again?

There's anecdotal evidence to suggest that using the fully synth ester based oils permanantly, reduces the life of the piston rings noticeably. The fully synth stuff is fantastic for race engines which get rebuilt routinely, not so great in a road car engine, day in day out. The semi synth stuff is nearly as good and hasn't got quite such a negative effect on engine seals.

Sounds like a load of internet originated tosh to me.

It is.

Cheers

Guy

[Octoposse]

So the Castrol 10W/60 fully synthetic in my WRX PPP (non tracked) is prob overkill?

(But at the same price as 3/4 tank of fuel it's not a problem cost wise).

[Syndrome]

Octoposse said:

So the Castrol 10W/60 fully synthetic in my WRX PPP (non tracked) is prob overkill?

(But at the same price as 3/4 tank of fuel it's not a problem cost wise).

It'll run just as well with semi synth. If you don't mind the extra costs of the fully synth, stick with it.

[scoobyPPP]

Has anyone here used10w60 edge sport on a sti ppp, like the sound of it but don't know if it will do any damAge

[scoobyPPP]

Has anyone here used10w60 edge sport on a sti ppp, like the sound of it but don't know if it will do any damAge

[binman jim]

always use the thinest oil the manufacturer recommends on a standard or slighty modded road car (especially in winter), dont quote me but on impreza's im guessing thats gunna be a something like a fully synthetic 5w/40. heavily modded or track cars are a different ball-game and your better off asking a tuner for their advice.