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#4626565 - 01/07/18 02:32 AM Tricky visco problem?
puguser Offline


Registered: 01/05/18
Posts: 2
Loc: Sweden
Hi all,

I have a Peugeot 206 1.6 16V (TU5JP4) 2004 model. Now when itís wintertime the temperature mostly lays around 0 degrees celsius (ca 32F). In November I switched from 10W-40 to 5W-30 for the upcoming winter.

Problem now is the oil still doesnít seem to be thin enough. When driving normally oil temp sticks just below 90C (194F). If you start pushing the car it will raise to ~120C (248F). Why is this a problem? Well, after this oil change the lifters have started ticking and Iím worried I canít go any thinner.

So how do I get the operating temp up and at the same time avoid more ticking? (The ticking is light but itís there)

Castrol Edge FST LL 5W-30


Edited by puguser (01/07/18 02:33 AM)

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#4626569 - 01/07/18 03:07 AM Re: Tricky visco problem? [Re: puguser]
Rolla07 Offline


Registered: 11/05/11
Posts: 4732
Loc: MTL, CANADA
Dont worry about ticking, it doesnt mean your engine is getting damaged. 5w30 is easily fine in 0 celsius. We get down to -28 celsius tonight, im using 0w20.


Edited by Rolla07 (01/07/18 03:08 AM)
_________________________
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#4626571 - 01/07/18 03:08 AM Re: Tricky visco problem? [Re: puguser]
Shannow Online   content


Registered: 12/12/02
Posts: 39820
Loc: 'Stralia
Originally Posted By: puguser
Problem now is the oil still doesnít seem to be thin enough. When driving normally oil temp sticks just below 90C (194F). If you start pushing the car it will raise to ~120C (248F). Why is this a problem? Well, after this oil change the lifters have started ticking and Iím worried I canít go any thinner.


How do you figure that the oil isn't "thin enough" ?

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#4626580 - 01/07/18 03:44 AM Re: Tricky visco problem? [Re: puguser]
Bailes1992 Offline


Registered: 03/10/17
Posts: 119
Loc: South Wales, UK
No problem here at all. TU engines have been around since the mid 80's and really prefer a *w40 oil.
The Castrol Edge 5w30 LL is a bit thin at operating temperature. It's also a mid saps oil so it lacks some basic anti wear additives that TU engines like.

Why not a 5w40 or 0w40 A3/B4 oil? There's loads to choose from and they will offer the same cold temperature flow and protection you're getting from your 5w30. Castrol and Mobil1 both do quality 0w40 oils or a cheaper alternative would be Shell Helix Ultra 5w40.


Edited by Bailes1992 (01/07/18 03:58 AM)
_________________________
'13 Suzuki Jimmny - '16 Dacia Duster 1.5DCi 4WD
'96 LR Defender 300TDi - '12 BMW 320d

Engine Oil - Fuchs Titan XTL GT1 5w40
Gearbox Oil - Fuchs Sintofluid 75w80
Diff Oil - Fuchs Sintopoid 75w90

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#4626584 - 01/07/18 04:26 AM Re: Tricky visco problem? [Re: puguser]
FordCapriDriver Offline


Registered: 10/22/15
Posts: 2376
Loc: Balearic Islands , Spain
You don't need to go any thinner, if i were you i would run a synthetic 5W-40 all year and not worry, your TU will be more than happy with that.
And don't worry if there is a bit of valvetrain noise, i have never heard a TU engine without a bit of ticking, my 1.1i TU on 20W-50 still ticks haha.
_________________________
1975 Ford Capri II Ghia 3000 V6, - Valvoline VR1 20W-50
1988 Ford Escort MkIV 1.6 Xr3i Cabrio, - Shell Rimula R4X 15W-40 HDEO.

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#4626686 - 01/07/18 08:46 AM Re: Tricky visco problem? [Re: FordCapriDriver]
Kira Offline


Registered: 08/19/10
Posts: 5202
Loc: Champlain/Hudson Valley
I have an analogous "problem". It's been cold and you can hear cars ticking a bit during start-ups.
My car ('07 Volvo V70 base) starts OK and sounds good doing it with Mobil1 0W-40.

HERE'S THE PROBLEM:
My friend, who took a detailed lubrication course at his job site, insists that you never venture off the "low number".
He said switching from a 10W-40 to a 10W-30 is OK but never, say, using 0W-30 where a 5W-30 is called for.

I always thought the "0W" was more nominative than actual. In fact, there could be no ZERO WEIGHT anything.

The BIG TROUBLE with the OP's situation is that he lives in a place where experimenting with different oils is expensive.

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#4626693 - 01/07/18 08:52 AM Re: Tricky visco problem? [Re: puguser]
tcp71 Offline


Registered: 08/12/13
Posts: 269
Loc: Alberta
The ticking is because the oil is thinner at running temperature. 0 Celsius isnít cold and a 10w40 oil is perfectly appropriate.

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#4626765 - 01/07/18 10:41 AM Re: Tricky visco problem? [Re: puguser]
puguser Offline


Registered: 01/05/18
Posts: 2
Loc: Sweden
Please correct me if I'm wrong but should I change from current 5W-30 to 0W-40, 5W-40 or 10W40, wouldn't the engine be even more cold?

I'd like to have a running temperature of at least 100C (212) so by the logic above I would need a 0W-20 oil which feels strange since I don't live in Arktis.

Is my assumption right that higher visco gives less temp and vice versa?

Say I should switch to Peugeot recommended 10W-40, wouldn't the engine temp go even lover?

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#4626807 - 01/07/18 11:17 AM Re: Tricky visco problem? [Re: puguser]
Bailes1992 Offline


Registered: 03/10/17
Posts: 119
Loc: South Wales, UK
Originally Posted By: puguser
Please correct me if I'm wrong but should I change from current 5W-30 to 0W-40, 5W-40 or 10W40, wouldn't the engine be even more cold?

I'd like to have a running temperature of at least 100C (212) so by the logic above I would need a 0W-20 oil which feels strange since I don't live in Arktis.

Is my assumption right that higher visco gives less temp and vice versa?

Say I should switch to Peugeot recommended 10W-40, wouldn't the engine temp go even lover?


Ah, it would seem you are missing some oil basics. Apologies, I didn't detect this in the first post.

Thinner oils usually make an engine run cooler as flow is increased, thicker oils usually make the engine run hotter. However, the difference is negligible. I would imagine the difference between a 0W20 and a 15w40 would be less than 10įc.

Your PSA TU5 calls for a 10W40. That means the oil at operating temperature has the viscosity of a SAE 40 weight oil. The 10W means the engine oil stays suitably viscous down to -20įf/-28įc.

Stick with a *w40, but if you want better cold temperature characteristics then look to a 0w or a 5w. If it was my engine I would be looking to a fully synthetic 5w40 or 0w40.


Edited by Bailes1992 (01/07/18 11:18 AM)
_________________________
'13 Suzuki Jimmny - '16 Dacia Duster 1.5DCi 4WD
'96 LR Defender 300TDi - '12 BMW 320d

Engine Oil - Fuchs Titan XTL GT1 5w40
Gearbox Oil - Fuchs Sintofluid 75w80
Diff Oil - Fuchs Sintopoid 75w90

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#4626835 - 01/07/18 11:38 AM Re: Tricky visco problem? [Re: Kira]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: Kira

HERE'S THE PROBLEM:
My friend, who took a detailed lubrication course at his job site, insists that you never venture off the "low number".
He said switching from a 10W-40 to a 10W-30 is OK but never, say, using 0W-30 where a 5W-30 is called for.


I do not see any rationale behind that statement.
_________________________
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(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4626866 - 01/07/18 11:54 AM Re: Tricky visco problem? [Re: Linctex]
Bailes1992 Offline


Registered: 03/10/17
Posts: 119
Loc: South Wales, UK
Originally Posted By: Linctex
Originally Posted By: Kira

HERE'S THE PROBLEM:
My friend, who took a detailed lubrication course at his job site, insists that you never venture off the "low number".
He said switching from a 10W-40 to a 10W-30 is OK but never, say, using 0W-30 where a 5W-30 is called for.


I do not see any rationale behind that statement.


Agreed, if anything I would say the opposite would be slightly true.
_________________________
'13 Suzuki Jimmny - '16 Dacia Duster 1.5DCi 4WD
'96 LR Defender 300TDi - '12 BMW 320d

Engine Oil - Fuchs Titan XTL GT1 5w40
Gearbox Oil - Fuchs Sintofluid 75w80
Diff Oil - Fuchs Sintopoid 75w90

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#4626923 - 01/07/18 12:39 PM Re: Tricky visco problem? [Re: Linctex]
car51 Offline


Registered: 03/12/15
Posts: 10251
Loc: Southwest PA
Originally Posted By: Linctex
Originally Posted By: Kira

HERE'S THE PROBLEM:
My friend, who took a detailed lubrication course at his job site, insists that you never venture off the "low number".
He said switching from a 10W-40 to a 10W-30 is OK but never, say, using 0W-30 where a 5W-30 is called for.


I do not see any rationale behind that statement.



Linctex is exactly right; that statement is bull caca
_________________________
2009 Toyota Camry LE

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#4626926 - 01/07/18 12:47 PM Re: Tricky visco problem? [Re: puguser]
simple_gifts Offline


Registered: 07/26/04
Posts: 11939
Loc: Middlesex County CT
Quote:

I always thought the "0W" was more nominative than actual. In fact, there could be no ZERO WEIGHT anything


OT: "W" stands for winter, not weight; it is an almost arbitrary assigned numerical scale.

Regardless, it you believed it stood for weight, do you also believe 0F is "no temperature?" j/k


Edited by simple_gifts (01/07/18 12:50 PM)
_________________________
2004 Prius; 92K ML Syn 5W-30
2007 Yaris 68K 0w-40 Castrol
2006 B2300;130K;ALM


Was driving an ox cart; Now on the USS Enterprise

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#4626941 - 01/07/18 01:03 PM Re: Tricky visco problem? [Re: puguser]
dwendt44 Offline


Registered: 05/17/06
Posts: 3967
Loc: Central Wisconsin
The 40 (as in (0W-40) might take SLIGHTLY longer to
get up to temperature that a -30, but likely not enough
to notice.
0W-40 is popular in Europe.


My 2Ę
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Too big of a battery,
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or too loud of a horn,
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