05-07-2020, 09:24 AM
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#1
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Registered User
Join Date: May 2020
Location: gensan philippines
Posts: 1
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change oil engine
whats the best oil engine for 1999 boxter 2.5?i live in hot weather
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05-08-2020, 01:25 PM
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#2
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1998 Boxster Owner
Join Date: Mar 2015
Location: Alviso, CA
Posts: 231
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Quote:
Originally Posted by mikebrant
whats the best oil engine for 1999 boxter 2.5?i live in hot weather
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Not as hot as PH but I live California (U.S.) and my mechanic uses Motul 5W40 https://www.motul.com/ca/en-US/products/8100-x-cess-5w40 - He recommended I change to Motul 5W40 over 0W40 Mobil 1.
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05-09-2020, 06:03 AM
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#3
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,794
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Oh Boy! Another oil thread ........
Probably next will be another IMSB thread
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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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05-10-2020, 07:33 AM
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#4
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Registered User
Join Date: Sep 2019
Posts: 64
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Quote:
Originally Posted by JayG
Oh Boy! Another oil thread ........
Probably next will be another IMSB thread
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Yep! A lot of new people I assume don't utilize the search function but...
Often! P-Cars really like frequent oil changes: I change at 4k max and have switched over to a 5w-40 Motul from the stock mobil one 0w-40 living in sunny California.
Also inspect your filter every-time and open up all the pleats! I switched over the LN Engineering filter adapter and run a filter mag for extra insurance and cut open the oil filter every-time to search for the whisker shavings.
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05-11-2020, 04:23 AM
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#5
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Registered User
Join Date: Aug 2009
Posts: 1,466
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I track and change oil often. I believe if you do some research you'll find Mobil changed there formula of the oil in the last 10 year due to federal guidelines on emissions. It is designed more for the newer models. Motul although more expensive is a better formula. and then there is always the Gibbs DT40. both are 5-40 blends.
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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05-11-2020, 01:46 PM
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#6
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Registered User
Join Date: Jan 2019
Location: PA
Posts: 1,531
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Not to hijack the thread, but I've been reading from a lot of people that use 5w-40, but nowhere in the manual does it specify 5w-40. Maybe 5w-30 for lower temps, but everything else is 10, 15, or 20 and W-30, 40 or 50.
I've been using Mobil1 10w40 full synthetic, because I'll never drive it when temps are below 14F, I may sometimes drive it when it's below 50, and most often drive it when it's above 50F.
Could someone explain the thought behind using 5w-40 when it's not spec'd in the manual? Obviously since so many people are using it, there must be some reason that I'm missing. School me, please! 
Last edited by piper6909; 05-11-2020 at 01:51 PM.
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05-11-2020, 03:11 PM
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#7
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Registered User
Join Date: Dec 2011
Location: SLC
Posts: 209
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Quote:
Originally Posted by mikebrant
whats the best oil engine for 1999 boxter 2.5?i live in hot weather
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Whatever 10W-40 fully synthetic oil you can easily get in Mindanao.
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PCA Intermountain Region Track Chair
SPB #50
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05-12-2020, 04:13 AM
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#8
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Registered User
Join Date: Aug 2009
Posts: 1,466
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Quote:
Originally Posted by piper6909
Not to hijack the thread, but I've been reading from a lot of people that use 5w-40, but nowhere in the manual does it specify 5w-40. Maybe 5w-30 for lower temps, but everything else is 10, 15, or 20 and W-30, 40 or 50.
I've been using Mobil1 10w40 full synthetic, because I'll never drive it when temps are below 14F, I may sometimes drive it when it's below 50, and most often drive it when it's above 50F.
Could someone explain the thought behind using 5w-40 when it's not spec'd in the manual? Obviously since so many people are using it, there must be some reason that I'm missing. School me, please! |
Yes your right. I guess My Oil preference comes from LN recommendation for the block update they do with nickies. Mobil may not make those blends any longer. except the extra mileage formula.
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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05-13-2020, 03:59 PM
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#9
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Registered User
Join Date: Jan 2019
Location: PA
Posts: 1,531
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Quote:
Originally Posted by jsceash
Yes your right. I guess My Oil preference comes from LN recommendation for the block update they do with nickies. Mobil may not make those blends any longer. except the extra mileage formula.
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Thank you. It makes sense that you'd go with whatever the builder recommends.
"nickies" is that short for nickle rod bearings?
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05-14-2020, 05:10 AM
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#10
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Registered User
Join Date: Aug 2009
Posts: 1,466
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Nickel silicon carbide plated cylinder. Because boring out the cylinders would reduce the thickness too much their process is to cut the cylinders down to the base of the water jacket and install new aluminum cylinders coated with a nick-a-sil plating ie nickies. Someone else may have a better description of their process but this was my observation.
This is the original cylinder this one was on the verge of a de-chunck.
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
Last edited by jsceash; 05-14-2020 at 05:22 AM.
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05-14-2020, 07:54 AM
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#11
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Quote:
Originally Posted by jsceash
Nickel silicon carbide plated cylinder. Because boring out the cylinders would reduce the thickness too much their process is to cut the cylinders down to the base of the water jacket and install new aluminum cylinders coated with a nick-a-sil plating ie nickies. Someone else may have a better description of their process but this was my observation.
This is the original cylinder this one was on the verge of a de-chunck.
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How did you come to discover the damage ?
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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05-14-2020, 11:23 AM
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#12
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Registered User
Join Date: Aug 2009
Posts: 1,466
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Quote:
Originally Posted by BYprodriver
How did you come to discover the damage ?
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You may remember I started with a base. So to do the upgrade I bought a flood salvage 2004 3.2 dirt cheap no compression on 3 cylinders. taking it apart found this bottoms of all the cylinders were water damaged (corroded).
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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05-17-2020, 06:02 AM
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#13
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Registered User
Join Date: Nov 2019
Location: Charlotte, NC
Posts: 187
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Quote:
Originally Posted by mikebrant
whats the best oil engine for 1999 boxter 2.5?i live in hot weather
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I have read many oil debates, but one of the issues these cars struggle with is the oil temperatures. This article is a little old, but makes enough sense to me. If money is no object, one of the good ester based oils like Motul 300v in the cans, or redline are top pics. I plan on switching to 300v after using Motul 8100 excess and dt40, and will monitor oil analysis.
http://www.w124performance.com/docs/general/RedLine/Why_Red_Line_10W-40_thread_notes.txt
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