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Oil Viscosity help which one to use? #4462227
07/17/17 06:51 PM
07/17/17 06:51 PM
Joined: Jul 2017
Posts: 22
MN, USA
TheBeaz Offline OP
TheBeaz  Offline OP
Joined: Jul 2017
Posts: 22
MN, USA
I have an old Volvo with 200k miles(2.4l NA) and I use full synthetic oil (M1HM) and change it once per year (about 5000 miles-don't drive much) Hasn't burned anything in the last 5k and blowby is minimal. I live in Minnesota where the coldest I have had to drive this car in was about -10 F and the average summer day is 70 F to 85 F but there are times when it can get over 90 F. The first time I changed the oil I put in 10W-30 but upon looking at the viscosity chart in the owners manual it says that 10W-30 is only good until -4 F and 5W-30 is only good until 86 F. My question is can full synthetic 5W-30 and 10W-30 last beyond/below the temperatures in this chart or do I need to switch between seasons or use 5W-40. This doesn't seam right I thought full synthetics could withstand extreme temperatures?

Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462237
07/17/17 07:06 PM
07/17/17 07:06 PM
Joined: Apr 2017
Posts: 515
Fort Worth TX
TheKracken Offline
TheKracken  Offline
Joined: Apr 2017
Posts: 515
Fort Worth TX
Why not use a euro spec 0w40 year long? The oil is good at minimum for 10k miles if not more, so it should suite you great. M1 0w40 is at walmart right now for 22.88 for 5 quarts


2011 Prius 96k miles RLI 5w20
97 Toy T100 4x4: amsoil 0w20 242k Miles
04 Toy Sienna awd: Pennzoil 0w20 281k Miles
Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462238
07/17/17 07:06 PM
07/17/17 07:06 PM
Joined: Apr 2004
Posts: 7,828
New York
pbm Offline
pbm  Offline
Joined: Apr 2004
Posts: 7,828
New York
Yes, I believe full synthetics can last beyond/ below the temperatures in that chart, IMO.
That chart was written when oils were probably SH (predominately Gr. 1 and lesser quality than modern oils).

If it's not using oil, I'd run 5w30 in winter and 10w30 in summer...If you are using oil, bump it up to 0w40 (Mobil 1 or Castrol Edge)....


'Journalism is Dead'
Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462239
07/17/17 07:06 PM
07/17/17 07:06 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
That chart represents Volvo's requirements most likely for conventional oil. You need to consider Mobil 1's limits. M1 5w-30 would easily handle both ends of your temperature requirements and keep to your once a year change schedule.

Last edited by OneEyeJack; 07/17/17 07:07 PM.
Re: Oil Viscosity help which one to use? [Re: pbm] #4462241
07/17/17 07:07 PM
07/17/17 07:07 PM
Joined: Jul 2017
Posts: 22
MN, USA
TheBeaz Offline OP
TheBeaz  Offline OP
Joined: Jul 2017
Posts: 22
MN, USA
It was written in 1997

Re: Oil Viscosity help which one to use? [Re: OneEyeJack] #4462243
07/17/17 07:10 PM
07/17/17 07:10 PM
Joined: Jul 2017
Posts: 22
MN, USA
TheBeaz Offline OP
TheBeaz  Offline OP
Joined: Jul 2017
Posts: 22
MN, USA
Thanks, I will likely switch to Pennzoil Platinum high mileage

Re: Oil Viscosity help which one to use? [Re: TheKracken] #4462248
07/17/17 07:14 PM
07/17/17 07:14 PM
Joined: Jul 2017
Posts: 22
MN, USA
TheBeaz Offline OP
TheBeaz  Offline OP
Joined: Jul 2017
Posts: 22
MN, USA
Yeah but is it safe to go out of the manufactures specifications?

Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462257
07/17/17 07:24 PM
07/17/17 07:24 PM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
I think pbm summed it up. Todays synthetics are far better than those dino oils of 97. A 5-30 synthetic IMO will do you fine in the fickle MN weather. Hit 98 here this afternoon. We finally got a nice shot of rain too.
My Scion recommends 5-20 and the Xterra gets 5-30



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462268
07/17/17 07:38 PM
07/17/17 07:38 PM
Joined: Jul 2016
Posts: 1,683
Jacksonville, FL
FlyNavyP3 Offline
FlyNavyP3  Offline
Joined: Jul 2016
Posts: 1,683
Jacksonville, FL
Concur with the above. No reason you couldn't run a 5w30 year round for your yearly OCI.

If you want to abide strictly by the owners manual there's no reason you couldn't also run a 0w40 or 5w40 year round for your annual OCI as well.

Either course of action will be just fine!


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462364
07/17/17 09:51 PM
07/17/17 09:51 PM
Joined: Sep 2014
Posts: 1,486
Seattle-ish, WA
Oro_O Offline
Oro_O  Offline
Joined: Sep 2014
Posts: 1,486
Seattle-ish, WA
If I did not start it much below 0F, the M1 10w-30HM is a great oil and worth sticking with it. I use it in most vehicles I take care of (ours, and my parents'). I live in a milder climate where cold cranking visc. is completely unimportant, and not in the Gopher state.

If you have to use it much in the very cold, then the 5w-30 HM variant is a better bet, though not as robust an oil overall. A synthetic 10w is good in fairly cold temps, too - just not as far.

Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462406
07/17/17 11:14 PM
07/17/17 11:14 PM
Joined: Oct 2014
Posts: 2,543
San Antonio, TX
Nyogtha Offline
Nyogtha  Offline
Joined: Oct 2014
Posts: 2,543
San Antonio, TX
That chart looks a bit bogus; even in 1997 a 5W-30 and 10W-30 should have the same upper ambient temperature limits as they are both a 30 after the dash. It's just the lower temperature limits that should be different.


"No matter how paranoid you are you're not paranoid enough. Tell the truth. Reach as many people as you can with it. That's your weapon." - Susanne Modeski, aka "Holly" to The Lone Gunmen
Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462431
07/18/17 12:23 AM
07/18/17 12:23 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: TheBeaz
I live in Minnesota where the coldest I have had to drive this car in was about -10 F and the average summer day is 70 F to 85 F but there are times when it can get over 90 F.


nice summer / brutal winter shocked2

Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462496
07/18/17 05:37 AM
07/18/17 05:37 AM
Joined: Oct 2015
Posts: 2,802
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,802
Balearic Islands , Spain
You could run a full synthetic 5W-30, 0W-40 or 5W-40 year round.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.

Finnish expat in Spain.
Re: Oil Viscosity help which one to use? [Re: TheBeaz] #4462507
07/18/17 05:52 AM
07/18/17 05:52 AM
Joined: Sep 2010
Posts: 2,098
GA.
ChrisD46 Offline
ChrisD46  Offline
Joined: Sep 2010
Posts: 2,098
GA.
It's not like we are talking air cooled engines like a old VW Beetle where the outside temps would be a factor . *Isn't this why guys in Texas can run a synthetic 5W20 all year long (including summer) because of radiators ?


2017 Hyundai Sonata 2.4L GDI 4 cylinder
2010 Hyundai Elantra 2.0L 4 cylinder
2007 Kia Sedona 3.8L 6 cylinder
Re: Oil Viscosity help which one to use? [Re: TheKracken] #4462515
07/18/17 05:57 AM
07/18/17 05:57 AM
Joined: Dec 2009
Posts: 26,231
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 26,231
Regina, Saskatchewan, Canada
Originally Posted By: TheKracken
Why not use a euro spec 0w40 year long?

This would be my first choice, or whatever dual rated HDEO you happen to find left. Given the price of M1 0w-40 quoted in the States, it's hard to go wrong with that.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
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