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Conventional 10w30 - safe for winter? #4618337
12/29/17 11:32 PM
12/29/17 11:32 PM
Joined: Dec 2014
Posts: 635
Toronto
dgunay Offline OP
dgunay  Offline OP

Joined: Dec 2014
Posts: 635
Toronto
Hey fellas, normally I wouldn't ask this kind of question but I am really on a fence to change or not to change the oil, I need your help.

I drive an Acura CSX with a K20Z2 engine (120k kms / 75k miles). The car currently runs on PYB 10w30 and I have put about 2k miles / 3k kms on PYB.

We have been dealing with one of the coldest winters. We've seen -5f so far, in Southern Ontario.

I switched to PYB 10w30 two months ago, since I was planning to keep the OCI relatively short (around 3-4k OCI). I wasn't expecting this kind of cold at all, as it used to be much warmer in the last few years. It always sits in an underground garage overnight, not heated but not too cold either. So I haven't changed the oil yet.

However, this weekend I will visit a friend of mine and car will stay outside (-25c/-13f) overnight, at least for 8+ hours. I know it's not optimal to run conventional, but I don't want to ruin my engine, and don't want to waste the good oil either. Just wondering, is it safe to keep the oil or should I switch to synthetic tomorrow?

Thanks in advance

Dan.





2009 Acura CSX - PUP 0w20 / Fram XG7317 / Maxlife ATF
2018 Kawasaki Z650 - Motul 4T 5100 10w40 / OEM Oil Filter
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618342
12/29/17 11:41 PM
12/29/17 11:41 PM
Joined: Mar 2015
Posts: 12,398
In the shop
53' Stude Offline
53' Stude  Offline

Joined: Mar 2015
Posts: 12,398
In the shop
Honestly Id go with Mobil 1 5w30 smile



Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618343
12/29/17 11:42 PM
12/29/17 11:42 PM
Joined: Feb 2014
Posts: 2,771
workbench CZ-USA KS KC
Marco620 Online happy
Marco620  Online Happy

Joined: Feb 2014
Posts: 2,771
workbench CZ-USA KS KC
I'd at least go PP 10 w30 full synthetic in winter.


15' Civic 1.8 i-vtec 221,000 mi 0w20 Redline/Redline CVT/Archoil9100/TEIN/Eibach/Tanabe Sustec/Borla Exhaust/87 E0 fuel/Yokohama
Son of a Navy Corpsman. Support vets!


Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618344
12/29/17 11:42 PM
12/29/17 11:42 PM
Joined: Dec 2013
Posts: 2,099
socal
barkingspider Offline
barkingspider  Offline

Joined: Dec 2013
Posts: 2,099
socal
My only experience in cold weather was my 02 S10 w dino 10w30 that was parked in -4F over a weekend. It started fine with no abnormal sounds, etc. it also had 30% coolant 70% water that was still in liquid form at that temp. If its going to worry you, just change it to 0w30 and call it a winter


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618358
12/30/17 12:18 AM
12/30/17 12:18 AM
Joined: Sep 2004
Posts: 8,011
Marshfield , MA
andyd Offline
andyd  Offline

Joined: Sep 2004
Posts: 8,011
Marshfield , MA
Add a pint of MMO and clean the insides a little hide


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618367
12/30/17 12:30 AM
12/30/17 12:30 AM
Joined: Sep 2015
Posts: 6,172
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline

Joined: Sep 2015
Posts: 6,172
Kalifornia Kollective
The oil is in there. It's a modern oil, so better than the past. It's PYB so it might be a fair percentage of synthetic ...

10W-30 was OK for maybe 30 odd years until they came up with 5W and 0W ... It was the go-to oil for winter from the late 1960's to the late 1990's ...

The thing about cold starts is not so much the oil (it is a factor), but mostly is the condition of the battery and the cables ... If the battery is big enough and the cables are too, and clean - it'll go just fine smile

Last edited by BrocLuno; 12/30/17 12:33 AM.

Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618369
12/30/17 12:32 AM
12/30/17 12:32 AM
Joined: Nov 2016
Posts: 1,303
WI
HoosierJeeper Offline
HoosierJeeper  Offline

Joined: Nov 2016
Posts: 1,303
WI
I wouldn't worry about it. People used to run 30W back in the day.


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618372
12/30/17 12:36 AM
12/30/17 12:36 AM
Joined: Jun 2015
Posts: 727
Canada
Run Offline
Run  Offline

Joined: Jun 2015
Posts: 727
Canada
I had 20w-50 in an engine that spaced 5w-30 and drove it in the winter. When I sold the vehicle the engine had 379000 km and still ran smoothly. 10w-30 is nothing to worry about. As others mentioned make sure the battery is still strong.


03 Neon 2.0 - VSP 5W-30 Pentius XL
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618373
12/30/17 12:37 AM
12/30/17 12:37 AM
Joined: Feb 2014
Posts: 2,780
Canada
Lolvoguy Offline
Lolvoguy  Offline

Joined: Feb 2014
Posts: 2,780
Canada
don't do it bro. Your vtec will suffer!


06 Lexus IS350- Wife
88 BMW 325is- Mistress
Say "no" to Turbo!
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618376
12/30/17 12:40 AM
12/30/17 12:40 AM
Joined: Jan 2011
Posts: 3,484
PV Az @ 5000'
AZjeff Offline
AZjeff  Offline

Joined: Jan 2011
Posts: 3,484
PV Az @ 5000'
If it's going to cause you worries maybe you could change to a 0 or 5w-30 syn now but keep the filter. You're 2/3s into your planned OCI already. A truly frugal person might save that oil and use a quart per future OC until it's gone. Nah, that too obsessive...


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618384
12/30/17 12:52 AM
12/30/17 12:52 AM
Joined: Dec 2016
Posts: 8,017
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,017
Waco, TX
Originally Posted By: dgunay

I switched to PYB 10w30 two months ago, ...........but I don't want to ruin my engine,


How do you figure 10W-30 PYB is going to ruin your engine? It's not THAT cold.

If you'll feel better, drain it into a clean pan and save it for a buddy with a car that uses oil.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618387
12/30/17 12:57 AM
12/30/17 12:57 AM
Joined: Nov 2011
Posts: 5,057
MTL, CANADA
Rolla07 Offline
Rolla07  Offline

Joined: Nov 2011
Posts: 5,057
MTL, CANADA
I wouldnt worry if your battery is in shape. Do you have a block heater? (Guessing you dont) Either way, I wouldnt change it for one overnight stint alone. Leave it alone.


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618393
12/30/17 01:17 AM
12/30/17 01:17 AM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline

Joined: Jul 2017
Posts: 542
Texas (south)
Change to a synthetic 5w30 high mileage. I would avoid SOPUS as they are not American


Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618394
12/30/17 01:17 AM
12/30/17 01:17 AM
Joined: Dec 2014
Posts: 635
Toronto
dgunay Offline OP
dgunay  Offline OP

Joined: Dec 2014
Posts: 635
Toronto
Thanks for all input (including troll posts lol) smile

Battery should be in a good condition, changed in 2016. It's an OE Acura battery. I don't have block heater, and I cannot use one without moving out, because there is no power output in my parking spot.


2009 Acura CSX - PUP 0w20 / Fram XG7317 / Maxlife ATF
2018 Kawasaki Z650 - Motul 4T 5100 10w40 / OEM Oil Filter
Re: Conventional 10w30 - safe for winter? [Re: dgunay] #4618402
12/30/17 01:52 AM
12/30/17 01:52 AM
Joined: Nov 2008
Posts: 3,520
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline

Joined: Nov 2008
Posts: 3,520
Oshawa, Ontario Canada
Just leave the PYB in the engine for this OCI. I live in the GTA and I never run 10w-30. Always a 5w-20 or 5w-30 full synthetic in this weather.

For our American friends, 0W-30 or 0W-20 aren't cheap and easily found at every Auto parts store in Canada. You usually pay more for that grade of oil up here. When Walmart Canada has it's oil specials it's usually only for 5w-20, 5w-30 or 10w-30 (10w which is a rarity up here).


2015 Grand Caravan SXT Plus 5w-20 Valvoline SynPower/Fram Ultra Filter
1997 Honda Civic CX 5w-30 PPPP/Fram Ultra Filter
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