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#4759261 - 05/16/18 09:36 PM 20w50 film strength
MikeyWikey Offline


Registered: 05/16/18
Posts: 1
Loc: Green Bay
Which 20w50 oil has the highest film strength?
Does 20w50 have higher film strength than 0w40?
Is 0w40 Mobil 1 safe to use in my 1980 Porsche 924 which calls for 20w50?

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#4759263 - 05/16/18 09:39 PM Re: 20w50 film strength [Re: MikeyWikey]
69Torino Offline


Registered: 12/12/17
Posts: 205
Loc: Indy
Is it air cooled? Iím guessing so, and if it is I would definitely stick to a 50 weight oil. Especially in a car that is designed to be driven spiritedly.
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Apparently I own too many cars and toys to fit in a signature.

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#4759288 - 05/16/18 10:01 PM Re: 20w50 film strength [Re: 69Torino]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7456
Loc: S California
Originally Posted By: 69Torino
Is it air cooled? Iím guessing so, and if it is I would definitely stick to a 50 weight oil. Especially in a car that is designed to be driven spiritedly.


A 924 is a water-cooled VW/Audi engine with a Porsche badge. Switching from a 50w to a 40w should be no problem.

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#4759289 - 05/16/18 10:02 PM Re: 20w50 film strength [Re: MikeyWikey]
Imp4 Offline


Registered: 04/06/18
Posts: 244
Loc: Somewhere in time
You could go ask 540Rat.... hide
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2001 Mitsubishi Galant 2.4 - 154k+
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#4759306 - 05/16/18 10:20 PM Re: 20w50 film strength [Re: MikeyWikey]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18052
Loc: Dallas,Tx USA
Maybe RP XPR 20W50.
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1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Pennzoil Platinum 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4759308 - 05/16/18 10:22 PM Re: 20w50 film strength [Re: MikeyWikey]
burla Offline


Registered: 11/07/16
Posts: 246
Loc: sonoma
Not 0w40, many oil manu's use that weight to be closer to a 5w30 then anything. I'm not saying it isn't safe to use in your car, just a comment on film strength.

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#4759315 - 05/16/18 10:36 PM Re: 20w50 film strength [Re: MikeyWikey]
PimTac Offline


Registered: 03/04/17
Posts: 3876
Loc: Soviet State of Washington
Merky would love a thread like this.
_________________________
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4759319 - 05/16/18 10:45 PM Re: 20w50 film strength [Re: MikeyWikey]
rooflessVW Offline


Registered: 12/24/11
Posts: 3840
Loc: North Carolina
I'd use M1 5W-50 or 15W-50 if it were mine and I put it through it's paces. Actually, I'd probably just use a Conventional HDEO like Delo or Delvac 15W-40.
_________________________
"Zed's dead baby, Zed's dead."

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#4759332 - 05/16/18 11:00 PM Re: 20w50 film strength [Re: MikeyWikey]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1543
Loc: Alberta
Originally Posted By: MikeyWikey
Which 20w50 oil has the highest film strength?
Does 20w50 have higher film strength than 0w40?
Is 0w40 Mobil 1 safe to use in my 1980 Porsche 924 which calls for 20w50?


Here you go.


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#4759337 - 05/16/18 11:04 PM Re: 20w50 film strength [Re: MikeyWikey]
BrocLuno Offline


Registered: 09/06/15
Posts: 5403
Loc: Kalifornia Kollective
Yup, Silver Bottle VR-1 for street driven engines. It is the good stuff when it comes to these heavier grades. Well known and proven at tracks all across the country every weekend smile
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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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#4759348 - 05/16/18 11:25 PM Re: 20w50 film strength [Re: MikeyWikey]
dogememe Offline


Registered: 04/15/17
Posts: 510
Loc: SF BAY AREA, CA
I've never heard a bad thing about VR-1 and we sell a TON of it at work at the parts store. If you wanted a synthetic you could use Royal Purple HPS, it's not that much more. I am no expert in your type of car but I would stick with a 20w-50.

https://www.youtube.com/watch?v=xmBdX4BhtME
_________________________
2007 Crown Vic 4.6 ~123K Miles: VAS/SynPower 5W-30, RP Filter
2010 Escape 2.5 ~68K Miles: VAS/SynPower 5W-30, Wix Filter
1997 Suburban 5.7 ~213K Miles: Chevron Supreme 5W-30, Microgard Filter

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#4759583 - 05/17/18 08:40 AM Re: 20w50 film strength [Re: MikeyWikey]
FordCapriDriver Offline


Registered: 10/22/15
Posts: 2359
Loc: Balearic Islands , Spain
Valvoline VR1 20W-50 is great, that Porsche will be more than happy on it!
_________________________
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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#4759711 - 05/17/18 10:29 AM Re: 20w50 film strength [Re: MikeyWikey]
1JZ_E46 Offline


Registered: 04/04/16
Posts: 1096
Loc: Oregon
Mobil 1 15W-50 would be perfect for this application. Itís a very robust oil. Itís essentially a synthetic 20W-50. Same thickness, better cold properties.
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2007 BMW X5 4.8i, 105K: Castrol EDGE 0W-40, Mann
2012 Mini Cooper, 45K: Castrol EDGE 0W-30, Mann

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#4760062 - 05/17/18 03:24 PM Re: 20w50 film strength [Re: MikeyWikey]
racin4ds Offline


Registered: 05/07/10
Posts: 881
Loc: Ocala, Florida
Ignore the thin oil guys on this one! Run the VR1 20W50!! That old motor was designed for it and needs the additives that are exempt from todays junk PCMO's
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#4760115 - 05/17/18 04:26 PM Re: 20w50 film strength [Re: MikeyWikey]
jayg Offline


Registered: 10/04/12
Posts: 1191
Loc: Rabbit Creek, Alaska
Why in the world are some of you recommending a 20w50 racing oil for a 110 hp VW 4 cylinder?

Any good conventional oil from 40 to 50 wt would be perfect in this. I'm guessing most here don't know what a 924 is.

OP if you already have the 0w40 us it. If you don't , buy a cheap conventional 40-50 wt and run it.
_________________________
Ď17 Ram 1500 Ecodiesel 5w40 Rotella T6
'15 Prius C Napa Full Syn 0w20
'87 Land Cruiser M1 5w50
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