Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   Pelican Parts Forums > 1- Porsche Technical Forums > Boxster & Cayman Forum

LinkBack Thread Tools Rate Thread
Thread Post New Thread    Reply
Registered User
flipper's Avatar
Join Date: Mar 2005
Location: springfield, mo
Posts: 389
oil help needed

Hello all, I changed my oil for the first time and I put 5w 30 mobile 1 in. Is that the wrong weight? will it be fine till the next change?
I live in Missouri and the motor has 85000 miles
oh, and its a 99 2.5
Thanks all,
2007 Boxster
99 Boxster, Arctic silver, lobster red(sold)
57 BMW R50
77 2.7 911s chocolate w/ducktail (Mr Hankey) (sold)
77 930 black (sold)
Old 10-17-2008, 05:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
kang's Avatar
Join Date: Nov 2004
Location: Planet Earth
Posts: 4,809
0W-40 is the proper weight.

All the Porsche approved oils are either 0W or 5W for the cold number, and 40 or 50 for the high number.

If it is going to be real cold for the duration of this OCI, and you don't drive on the track or push the engine real hard, 5W-30 might be OK, but don't call me if your engine grenades.
Old 10-17-2008, 07:24 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
Grant Lenahan's Avatar
Join Date: Sep 2005
Location: New Jersey
Posts: 86
Mobil1 5W30 is "ok" if you understand what it is

If you look at the viscosity curves for M1 5W30 vs 0W40 vs temperature, they are quite similar except at extreme cold ( where 0W40 is slightly better) and when hot ( where 0W40 is significantly better). The biggest difference is that 0W40 carries the ACEA A3 certification - european testing for high performance motors. Why? because it meets a specific test for high speed, high temperature oil shear. The HTHS shear test requires a rating of 3.3 ( units) or better. M1 5W30 achieves about 2.9 on that test.

So, will it ruin your car? Under most circumstances, it will work just as well as the 0W40. But dont push it hard when its very hot. Dont race it or take it to the track or autoX. Basically understand what you have. Normal driving in cool or even moderate weather? Probably just fine.

About the worst test for such an oil is a turbocharged motor. And i used M1 blue cap for 80k miles in my Audi S4 bi-turbo. but I always drove it easy when cold, cooled it down, and changed the oil by 7500 miles. After 80k, when others were losing their turbos, mine were perfect and used not one drop of oil in 7500 miles.

So be smart and your ok. Planning to race this summer? Change th oil.

Old 10-23-2008, 11:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)

Thread Tools
Rate This Thread
Rate This Thread:


All times are GMT -8. The time now is 11:57 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.