What oil for a CaymanS (5w-40, 0w-40, etc)

[Ewa Woowa]

Hi.

Can you knowledgeable forum members recommend the best oil for a CaymanS?
I've been recommended 5w-40, but I believe that the factory default is 0w-40?

Any issues, etc?

[cslwannabe]

My 987.1 S has been switched to 5w40 on the recommendation of Revolution - they advised that as the miles start to creep up its better for cars in the UK climate. I believe 0w40 is what they were supplied with originally.

[Bennachie]

So you are using an oil that is 'thicker' when cold and therefore takes more time to circulate in a car used in a 'colder' climate. ie this country?..............
They are both the same when the engine is hot.

0w-40

Edited by Bennachie on Monday 6th May 12:58

[Gibbo205]

Bennachie said:

So you are using an oil that is 'thicker' when cold and therefore takes more time to circulate in a car used in a 'colder' climate. ie this country?..............
They are both the same when the engine is hot.

0w-40

Edited by Bennachie on Monday 6th May 12:58

But a thin oil does not stick/lube engine components as well as a thick oil from start. On a brand new tight engine 0W-40 is fine but an older engine 5W-40 or even 10W-50 is a good idea. Some of the GT3 guys use 10W-60 for the extra protection it provides.

Then the guys rebuilding these engines due to the flaws the engine have also recommend thicker oils for better protection.

[Ewa Woowa]

Gibbo205 said:

But a thin oil does not stick/lube engine components as well as a thick oil from start. On a brand new tight engine 0W-40 is fine but an older engine 5W-40 or even 10W-50 is a good idea. Some of the GT3 guys use 10W-60 for the extra protection it provides.

Then the guys rebuilding these engines due to the flaws the engine have also recommend thicker oils for better protection.

Oh dear, then the answer is that half the people recommend the thinner one for better "from start" running, but half the people recommend the thicker one for "better protection"...?

[Gibbo205]

Ewa Woowa said:

Oh dear, then the answer is that half the people recommend the thinner one for better "from start" running, but half the people recommend the thicker one for "better protection"...?

I'd rather take advice from the people who dismantle and rebuild engines, or the oil manufacturers themselves, not armchair experts.

Very thin oils give better economy and emissions or are recommended in very cold climates, the UK does not have extreme cold weather.

I'd use a 5W-40 for winter months and a 10W-50 in summer months from a quality brand.

Hartech recommend to prevent bore scoring 5W-40 or 10W-50 and those guys see a lot of these engines.

[cslwannabe]

As above. 5w40 is still a Porsche approved oil and I was happy to
follow the advice I was given - Revolution would have used 0w40 but their suggestion was to switch to 5w40 and my Boxster is a 'fair weather' car so I was happy to heed their advice.

[Beanoir]

I've switched to 5-40 now in mine, recommended by many when I was deciding.

[Trev450]

Which brand(s) of 5w 40 are favoured?