Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

0/40W Mobil 1 ?


Recommended Posts

Just what IS the right weight synthetic to run in the Boxster ?

I have been running 5/40W Mobil 1 , and find that it bleeds off the timing chain tensioners over time when parked. Want to switch to 10/40W Mobil 1 - but they seem to have discontinued this and other 40W blends other than 0/40W.

Many Porsche shops recommend 15/50W Synthetic.

Porsche USA recommends 0/40W Mobil 1 !! Why in the world would they suggest such a light blend ??

Any thoughts on this subject ?

JA

Link to comment
Share on other sites

0-40 offers more efficiency and HP compared to heavier oil. 40 is heavy enough when engine is hot. i'd consider going to 15-50 for a turbo or SC car but not necessary for NA. Your 5-40 isn't that much thicker than 0-40 when temp is warm or hot.

Thanks for the Input ! But again , my objective is to eliminate the timing chain tensioner bleed down after parked for long periods. ( hate that rattling for a split second )

Edited by jvaski
Link to comment
Share on other sites

The rattle is from the hydraulic lifters not the timing chains.

Porsche's "approved" list includes 0W-40 and 5W-40 all synthetic oils

Is this normal for the hydraulic lifters to be rattling on cold start after parked for a while ?

Is there a way to cold crank the engine without firing it to get oil pressure up ?

Link to comment
Share on other sites

  • Admin
Is this normal for the hydraulic lifters to be rattling on cold start after parked for a while ?

Is there a way to cold crank the engine without firing it to get oil pressure up ?

Cold - yes Warm - no.

There is a TSB for more of a screeching noise on during warmup (on 987's only). If you are getting this screeching noise then you should take it to your dealer and tell them you have the problem described in TSB 1/06 1726 Screeching Noise From the Engine During Warm-up -- dated Feb 27, 2006.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.