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SR20DET Oil Recommendation #4645650
01/25/18 08:46 AM
01/25/18 08:46 AM
Joined: Mar 2005
Posts: 413
Pennslyvania
Vspec Offline OP
Vspec  Offline OP

Joined: Mar 2005
Posts: 413
Pennslyvania
Hey Guys,

First off I read all the threads on this site regarding oil recommendations for users that posted regarding the SR20DET and DE.

My engine is pretty heavily modified and dynoed at around 350 whp, with a Tomei Turbo.

Long story short, living in southern PA, this car will be driven year round starting in spring, temperatures range in winter to -5F in the worst winter conditions to 95-100 in the hottest summer locations.

In the past users recommended M1 0w40, most of the Nissan\SR20 forums recommend 15w50, I can get my hands on Delvac 1 ESP 5w40 and currently am using that.

Drain intervals of 5,000 miles (Shorter on track events).

Would appreciate any thoughts should I keep with the Delvac 1 ESP or move to something else?


2014 Ford Focus ST
91 Nissan 240sx (SR20DET)
Re: SR20DET Oil Recommendation [Re: Vspec] #4645680
01/25/18 09:22 AM
01/25/18 09:22 AM
Joined: Jun 2009
Posts: 268
Maryville, TN
SubyRoo Offline
SubyRoo  Offline

Joined: Jun 2009
Posts: 268
Maryville, TN
I owned a 92 240 with an SR swap around the same power output as yours for several years. I used redline 10w30 back when Advance Auto was selling it after I couldn't get the redline easily I switched to Mobil 1 0w40 and never had any issues. If I had the car today considering I never did any track time I would probably use M1 0w40 or Castrol 0W40 just because they are easy to find.

Last edited by SubyRoo; 01/25/18 09:24 AM.

1999 Acura Integra GS-R 271K
1998 Honda CR-V EX 255K
2010 Mazda 3 52K
Re: SR20DET Oil Recommendation [Re: Vspec] #4645697
01/25/18 09:44 AM
01/25/18 09:44 AM
Joined: May 2009
Posts: 12,488
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline

Joined: May 2009
Posts: 12,488
N.H, U.S.A.
Need some more engine info. Aftermarket pistons? Forged or cast or eutectic?

Whats the piston to wall and measured cyl taper?

Whats your typ high oil temp?

If not too high or sloppy an ACEA 30 grade A3 should do it.

You are likely giving away some power with the diesel 40 grade.

Last edited by ARCOgraphite; 01/25/18 09:47 AM.

2019 VW Jetta S,6M OCI#0 2103mi-Castrol Edge Prof? VW508+OE Filter; '17 Subaru Crosstrek CVT OC#6 43467mi-Valvoline Adv 0w20 + SOA Filter
Re: SR20DET Oil Recommendation [Re: Vspec] #4645710
01/25/18 10:02 AM
01/25/18 10:02 AM
Joined: Apr 2017
Posts: 1,522
Ontario, Canada
mightymousetech Offline
mightymousetech  Offline

Joined: Apr 2017
Posts: 1,522
Ontario, Canada
Also very important, what oil temps are you seeing?


Mighty Mouse Tech
BMW Tech, Former Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL
Re: SR20DET Oil Recommendation [Re: Vspec] #4645829
01/25/18 11:35 AM
01/25/18 11:35 AM
Joined: Mar 2005
Posts: 413
Pennslyvania
Vspec Offline OP
Vspec  Offline OP

Joined: Mar 2005
Posts: 413
Pennslyvania
Hey guys more info.

Stock bottom end, *built* head. Cams, Rocker arm stoppers, valves and springs etc.

Oil temps are hard for me to gauge as I haven't put the car back on the road since the "big" turbo upgrade or the head work, I have a Greddy oil cooler I can install but I got it second hand and want to send it out to get cleaned first.

Apologies on not having more specific information.

Last edited by Vspec; 01/25/18 11:45 AM.

2014 Ford Focus ST
91 Nissan 240sx (SR20DET)
Re: SR20DET Oil Recommendation [Re: Vspec] #4645858
01/25/18 12:00 PM
01/25/18 12:00 PM
Joined: Jun 2009
Posts: 268
Maryville, TN
SubyRoo Offline
SubyRoo  Offline

Joined: Jun 2009
Posts: 268
Maryville, TN
Originally Posted By: Vspec
Hey guys more info.

Stock bottom end, *built* head. Cams, Rocker arm stoppers, valves and springs etc.

Oil temps are hard for me to gauge as I haven't put the car back on the road since the "big" turbo upgrade or the head work, I have a Greddy oil cooler I can install but I got it second hand and want to send it out to get cleaned first.

Apologies on not having more specific information.


I eventually went to forged internals with mine but ran with a stock bottom end like yours for years on a Garrett gt2871r turbo. If you are gonna do some track time your best bet would be to do as has been recommended and get an oil temp gauge and go from there making an oil choice. If it was mainly normal driving conditions the 0w40 Mobil 1 worked fine for me. Just curious, what engine management are you using for your?

Last edited by SubyRoo; 01/25/18 12:01 PM.

1999 Acura Integra GS-R 271K
1998 Honda CR-V EX 255K
2010 Mazda 3 52K
Re: SR20DET Oil Recommendation [Re: SubyRoo] #4645930
01/25/18 01:10 PM
01/25/18 01:10 PM
Joined: Mar 2005
Posts: 413
Pennslyvania
Vspec Offline OP
Vspec  Offline OP

Joined: Mar 2005
Posts: 413
Pennslyvania
Originally Posted By: SubyRoo
Originally Posted By: Vspec
Hey guys more info.

Stock bottom end, *built* head. Cams, Rocker arm stoppers, valves and springs etc.

Oil temps are hard for me to gauge as I haven't put the car back on the road since the "big" turbo upgrade or the head work, I have a Greddy oil cooler I can install but I got it second hand and want to send it out to get cleaned first.

Apologies on not having more specific information.


I eventually went to forged internals with mine but ran with a stock bottom end like yours for years on a Garrett gt2871r turbo. If you are gonna do some track time your best bet would be to do as has been recommended and get an oil temp gauge and go from there making an oil choice. If it was mainly normal driving conditions the 0w40 Mobil 1 worked fine for me. Just curious, what engine management are you using for your?


RS-Enthalpy handled my tuning solution.


2014 Ford Focus ST
91 Nissan 240sx (SR20DET)
Re: SR20DET Oil Recommendation [Re: Vspec] #4646105
01/25/18 04:44 PM
01/25/18 04:44 PM
Joined: Feb 2014
Posts: 2,795
workbench CZ-USA KS KC
Marco620 Online happy
Marco620  Online Happy

Joined: Feb 2014
Posts: 2,795
workbench CZ-USA KS KC
Redline Oil for sure.10w30,0w40


15' Civic 1.8 i-vtec 222,222+ mi Redline oil/cvt fluid & Archoil9100
Just say no to drugs, union made cars and amsoil.
Son of a Navy Corpsman. Support vets!


Re: SR20DET Oil Recommendation [Re: Vspec] #4646133
01/25/18 05:14 PM
01/25/18 05:14 PM
Joined: Apr 2017
Posts: 52
Down Under
juggernaut Offline
juggernaut  Offline

Joined: Apr 2017
Posts: 52
Down Under
I used Motul 300V 10w/40 in my circa 400rwhp built sr20det, ran fine for the 7 or so years in this state of tune before selling it. I also ran a Greddy oil cooler with t-stat and normal driving, oil temps were about 10 degrees c higher than water temp. Also had a larger remote oil filter and larger Greddy sump with internal gates.

Don't see minus temps where I live though or very rarely but peak temps were similar to yours.

In a lower state of tune without oil cooler I ran Mobil 1 5w50 but had scuffing on the cams and finger followers - so I ditched Mobil 1 and switched to the Motul when I did the rebuild.

Last edited by juggernaut; 01/25/18 05:25 PM.
Re: SR20DET Oil Recommendation [Re: Vspec] #4646146
01/25/18 05:34 PM
01/25/18 05:34 PM
Joined: Apr 2017
Posts: 52
Down Under
juggernaut Offline
juggernaut  Offline

Joined: Apr 2017
Posts: 52
Down Under
I've used Mobil 1 5w/50 in other cars I've tracked too and get nervous at the [censored] poor hot oil pressure at lower revs and idle at the track. Probably why Gm recommends Mobil 1 15w/50 in the Corvettes when tracked vs the 5w/30 on the street.

Last edited by juggernaut; 01/25/18 05:36 PM.
Re: SR20DET Oil Recommendation [Re: Vspec] #4646414
01/25/18 10:38 PM
01/25/18 10:38 PM
Joined: Apr 2016
Posts: 2,000
Oregon
1JZ_E46 Offline
1JZ_E46  Offline

Joined: Apr 2016
Posts: 2,000
Oregon
If you donít want to shell out for Redline, find an A3/B4 Euro synthetic oil. Walmart carries three... M1, Castrol, Pennzoil. Little less than $5 a quart. Need to consider that 15W-50 has adverse effects like more friction (higher heat), slower turbo spool, and more wear on start up.


2007 X5 4.8i: M1 HM 10W-30
2016 Countryman S: Castrol 0W-40
Re: SR20DET Oil Recommendation [Re: 1JZ_E46] #4646499
01/26/18 12:14 AM
01/26/18 12:14 AM
Joined: Oct 2009
Posts: 4,058
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline

Joined: Oct 2009
Posts: 4,058
Wet side WA
Originally Posted By: 1JZ_E46
If you donít want to shell out for Redline, find an A3/B4 Euro synthetic oil. Walmart carries three... M1, Castrol, Pennzoil. Little less than $5 a quart. Need to consider that 15W-50 has adverse effects like more friction (higher heat), slower turbo spool, and more wear on start up.


Don't get impatient you'll find a 5 quart Jug for under $23.


2004 Corolla 130035
Out: EDGE EP 5W-30 Bosch 3311 7156 Miles
In: Havoline Pro DS 10w-30 Purolator PureOne 3-14-19 129693
2006 Duramax 74725
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: SR20DET Oil Recommendation [Re: Vspec] #4646587
01/26/18 04:54 AM
01/26/18 04:54 AM
Joined: Oct 2016
Posts: 232
California
jj51702 Offline
jj51702  Offline

Joined: Oct 2016
Posts: 232
California
Supertech 0w16

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