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xanderdeg · Posted: Tue Apr 23, 2013 10:53 am Post subject: What oil should I use?

Doing my spring oil change within the next couple of days, just wondering what viscosity to use for the spring/summer months? I'm currently running 10w30 non synthetic oil.

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11732 Location: PacNW

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WeiBe (1987 924S 2.5t) - 931 S3

!tom · Posted: Tue Apr 23, 2013 1:43 pm Post subject:

I use 20-50 dino juice year round.
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78 924 NA
5-lug

xanderdeg · Posted: Tue Apr 23, 2013 1:50 pm Post subject:

Synthetic? I hate to bring it up, but would regular oil with the same viscosity be pretty much the same?

!tom · Posted: Tue Apr 23, 2013 2:13 pm Post subject:

Dino juice means not synthetic.

It depends on your motor. Mine uses oil, so synthetic would be way too expensive. It's also old and tired, so thicker oil makes sense.

Synthetics are a no-brainer in a turbo motor. Synthetic and conventional are NOT the same, but conventional is good enough for many applications.
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78 924 NA
5-lug

txjake · Joined: 17 Feb 2007 Posts: 395 Location: Oklahoma City OK

Brad Penn is very good.
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1978 924, aka The Red Rocker

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11732 Location: PacNW

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

20-50 brad penn is what i use on my cars.
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- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11732 Location: PacNW

You wanna see something funny check out the oil threads on Pelican. . .people get seriously pissed off.
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WeiBe (1987 924S 2.5t) - 931 S3

MikesCoupeGT · Joined: 18 Oct 2006 Posts: 471 Location: Ontario Canada

I just put the Penn 20 - 50 in my car last weekend.
I would tend to stay away from the Synthetic unless it has been used for a while before. Or if you have just done a motor rebuild and are starting from scratch oil wise. I would probably use a high mileage oil as well.

just my thoughts. I went with Penn as my car will be tracked a bit this summer.
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Cheers;
MikesCoupeGT
'76 924
'83 944
''19 Elantra GT N-Line

joemac · Joined: 22 Apr 2013 Posts: 44 Location: SE Pa.

xanderdeg · Posted: Wed May 01, 2013 1:30 pm Post subject:

Put 20 50 in yesterday and IT'S TOO THICK!

Idles at just above 2bar when warm (not that bad)

Cruising on the highway at 3k rpm reads 5.8bar (pretty damn high)

Above 3k rpm it goes up to about 6.3bar and then stops ascending.

Thinking I'll go out and buy some 10 30 since that seemed to work well before. Maybe some 10 40.

Anybody want to buy some barely used 20w 50 Castrol dino juice?

Duncan · Posted: Wed May 01, 2013 5:56 pm Post subject:

I am not an expert, but would be really happy with those numbers.
I am running the same weight oil and get the same numbers.
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1983 NA Alpineweiss since 2001
Peugeot 205 Generation

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11732 Location: PacNW

Those pressures are good per FSM. Plus, they will go down after a few heat cycles.
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WeiBe (1987 924S 2.5t) - 931 S3

xanderdeg · Posted: Thu May 02, 2013 3:41 pm Post subject:

Hmm, they seemed a little high to me. But I probably know less than you guys do

10 30 gave me very different pressures that seemed a little more "comfortable" (4bar at 3krpm on the highway. Idling at 1bar.)

I'll see how it goes. Thanks guys!