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#4618337 - 12/29/17 10:32 PM Conventional 10w30 - safe for winter?
dgunay Offline


Registered: 12/05/14
Posts: 607
Loc: 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 (K20Z2 Auto)
PUP 5w30 / M1-110 / Maxlife ATF
Koni STR.T Struts / Tein S-Tech Springs / 20mm OEM RSB
Cooper Zeon RS3-A / Continental WinterContact SI

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#4618342 - 12/29/17 10:41 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
car51 Online   content


Registered: 03/12/15
Posts: 10251
Loc: Southwest PA
Honestly Id go with Mobil 1 5w30 smile
_________________________
2009 Toyota Camry LE

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#4618343 - 12/29/17 10:42 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
Marco620 Offline


Registered: 02/25/14
Posts: 2186
Loc: Deplorable Kansan,HK fan!
I'd at least go PP 10 w30 full synthetic in winter.
_________________________
2015 Civic 162k mi.0w20 Redline/Archoil,HPS SRI,Yokohama/Moog links Borla Exhaust/Vibrant Resonator/Tein Suspension
Go Nashville Predators!

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#4618344 - 12/29/17 10:42 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
barkingspider Offline


Registered: 12/22/13
Posts: 2040
Loc: 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
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06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
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#4618358 - 12/29/17 11:18 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
andyd Offline


Registered: 09/25/04
Posts: 7136
Loc: 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

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#4618367 - 12/29/17 11:30 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
BrocLuno Offline


Registered: 09/06/15
Posts: 5508
Loc: 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


Edited by BrocLuno (12/29/17 11:33 PM)
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4618369 - 12/29/17 11:32 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: 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)

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#4618372 - 12/29/17 11:36 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
Run Offline


Registered: 06/07/15
Posts: 716
Loc: 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.
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03 Neon 2.0 - VSP 5W-30 Pentius XL

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#4618373 - 12/29/17 11:37 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
Lolvoguy Offline


Registered: 02/06/14
Posts: 2325
Loc: Canada
don't do it bro. Your vtec will suffer!
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06 Lexus IS350- Wife
88 BMW 325is- Mistress
03 Suzuki SV650S- One night stand

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#4618376 - 12/29/17 11:40 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
AZjeff Offline


Registered: 01/14/11
Posts: 2630
Loc: PV Az
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...
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86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP *gasp*
16 Silverado 1500 4.3 Ecotec3, DI, AFM 5W-30 PP

Why know when you can guess?!


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#4618384 - 12/29/17 11:52 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: 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."

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#4618387 - 12/29/17 11:57 PM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
Rolla07 Offline


Registered: 11/05/11
Posts: 4732
Loc: 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


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#4618393 - 12/30/17 12:17 AM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
FermeLaPorte Offline


Registered: 07/25/17
Posts: 468
Loc: 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.

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#4618394 - 12/30/17 12:17 AM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
dgunay Offline


Registered: 12/05/14
Posts: 607
Loc: 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 (K20Z2 Auto)
PUP 5w30 / M1-110 / Maxlife ATF
Koni STR.T Struts / Tein S-Tech Springs / 20mm OEM RSB
Cooper Zeon RS3-A / Continental WinterContact SI

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#4618402 - 12/30/17 12:52 AM Re: Conventional 10w30 - safe for winter? [Re: dgunay]
JC1 Offline


Registered: 11/29/08
Posts: 3001
Loc: 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 PPPP/Wix Filter
1997 Honda Civic CX 5w-30 PPPP/Mahle Filter

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