Best Oil

[flyfisher 6 2 Cars]

yesterday i posted a topic about which was best oil for my gti. also read oilmans posts as i only use for road use no track use at all 10/40 semi syn was thought to be about right but what i want to do is boost oil pressure a bit and thought 10/50 might be a better oppion. whats your views thanks

[pug_ham 244 3 Cars]

Using a higher hot oil viscosity to improve oil pressure is a false move imo & to do it properly you need to look at using different methods such as the (proper) PTS uprated oil pump spring (not the 6 bar thats ~£3 from Peugeot or £8 off ebay) or by using a later pump, chain & crank pinion to give a better drive ratio than the original bits.

 

I've been running my car on Fuchs Titan XTR 10w40 without problem for the last few years & will continue to do so when its back on the road with the new engine.

 

Graham.

[large 33]

TBH unless you have a problem with your oil pressure 10w40 will be fine.

If you do have a problem I would try and find out what it is rather than paper over the cracks with thicker oil.

[feb 47]

I have always been using Shell Helix 10W-40 semi synthetic in mine (changed every 3k miles) and it has been fine. Engine has done about 90k IIRC IIRC and hopefully Anthony will confirm all is well if/when he takes it apart.

Edited November 16, 2010 by feb

[saveloy 8]

Ultimately, given the fact that the engine needs to deal with some abuse, I would always go with a fully synthetic 15W/50.

The XU 8 valve doesn't like a thin oil when cold & the advantages of a thinner oil when warm are rubbished once you've given it some proper beans.

Don't scratch your head, do the logical thing.

 

Hey Feb, how are you boy?

[unariciflocos 49 1 Cars]

I remember reading in some user manual that Peugeot recommend 10w40 for normal driving and 15w40 for spirited driving. Me and my mates use either 10w60 or 15w50 Agip Racing Full Synth.

Edited November 26, 2010 by unariciflocos

[woodsy 0]

Another vote for Fuchs Titan 10/40 in my mi motor.

[large 33]

i only use for road use no track use at all

 

 

Ultimately, given the fact that the engine needs to deal with some abuse,

 

Sorry saveloy I can't see how you can say that given the OP quote. Could you possibly elaborate?

[CaptainK 11]

I remember reading in some user manual that Peugeot recommend 10w40 for normal driving and 15w40 for spirited driving.

They need shooting if they did as there is no difference when up to temperature. The number before the "w" relates to the cold properties of the oil. Higher the number is, the more viscous it is when cold. Spirited driving should only be done on a warmed up engine when the oil is at its LEAST thickest - when oil gets warmer it becomes LESS thicker and thus flows better around an engine allowing for spirited driving without damaging the engine. The number after the "w" relates to the properties of the oil when at "operating temp" (loosely). As you can see, a 15w40 and a 10w40 is no different when up to temperature for spirited driving. Putting a "15w" in it will only mean that the oil is much thicker when colder and will be harder to flow around the engine and will probably take a little longer to get up to temperature. So counter productive really.

 

In winter time especially with all this very cold weather, a decent 5w40 or even a 0w40 would be much better as they are less thicker when cold and thus will flow easier around the engine from cold start and thus protect the engine better. As they are also rated "40" for operating temperature, they will be ideal for spirited driving and so forth (though a "50" rating *might* be better for a dedicated track car which is under constant abuse and high temperatures).

 

I personally use a decent 5w40 all year round - the "5w" cold rating means it'll flow nicely even from a cold start, and the "40" operating temp rate is ideal for our engines when driven enthusiastically.

Edited November 30, 2010 by CaptainK