Which oil to use

[Flavor 987S]

Use a high quality, full synthetic, 5W40 or 5W50. Change yearly or every 5,000 miles. What are you using now?

[tonycarreon]

Originally Posted by Flavor 987S

What are you using now?

ruh-roh...

[doli3415]

What's up with the ruh-roh?

I'm using Mobil 1 0W-40, that's what the Porsche dealer recommended.

[tonycarreon]

Originally Posted by doli3415

What's up with the ruh-roh?

some people are very... passionate about their preferred brand / weight of oil

http://986forum.com/forums/general-discussions/35122-best-oil.html

http://986forum.com/forums/performance-technical-chat/46981-oil-filter-recommendation-2005-boxster-s.html

http://986forum.com/forums/general-discussions/45362-im-changing-brand-oil.html

http://986forum.com/forums/performance-technical-chat/43547-engine-oil.html

and on, and on, and on...

https://sites.google.com/site/mikefocke2/approvedmotoroils

Oils: What motor oil should I use? Which oil is best for my Porsche or aircooled engine?

Best oil for my 2000 Porsche Boxster s - Bob Is The Oil Guy

[Flavor 987S]

Originally Posted by doli3415

I'm using Mobil 1 0W-40, that's what the Porsche dealer recommended.

I'd recommend either:

Joe Gibbs DT40 5W40
or
Mobil 1 5W50

[AKnowles]

Originally Posted by doli3415

I'm using Mobil 1 0W-40, that's what the Porsche dealer recommended.

Me too. Change it every 5K as well.

[j.fro]

Originally Posted by Flavor 987S

Use a high quality, full synthetic, 5W40 or 5W50. Change yearly or every 5,000 miles. What are you using now?

+1
And use Castrol full synthetic

[riverside986]

Originally Posted by j.fro

+1
And use Castrol full synthetic

Without going into a long rant, the term "full synthetic" means different things to different people and world markets.

In seriously warm SoCal low desert, perhaps consider Redline 10W-40. In high desert with occasional frosty mornings Redline 5W-40 would be a decent choice. (Properties differ appreciably only at truly cold start-up.) Neither is cheap.

There are lots of good oils. I love "German Castrol" (a heavy 0W-30) for my GTI, but most would say the claimed HTHS viscosity of around 3.5 or 3.6 is a little low for the 986.