Alright who here runs 20W-50 ( or higher )

[userfriendly]

Many SAE 40s have higher HTHS than some 20W50s especially at post-shear drain time.
I use and have used SAE 40 & 50 in just about everything including XW20 CAFE engines.

 

[CharlieBauer]

Originally Posted By: userfriendly
Many SAE 40s have higher HTHS than some 20W50s especially at post-shear drain time.
I use and have used SAE 40 & 50 in just about everything including XW20 CAFE engines.


That's a good point. In certain climates, like the OPs, why bother with a multigrade at all?

 

[userfriendly]

Straight modern group II SAE 40s could be 20W40 or 25W40, and SAE 50, 25W50. Often SAE 30 is referred to reference oil 20W30.
For example "XW20 achieved 4% better fuel economy than the base-line non FM'd 20W30".

 

[AntsinmyEyes]

my rx-7 runs 15w50 napa synthetic. seems to like it well enough

 

[SR5]

Oils:
- Mineral - Penrite HPR 20W60, Castrol GTX 20W50, Valvoline XLD 20W50
- SemiSynthetic - Shell Helix HX7 15W50
- Full Synthetic (PAO) - Castrol Formula-R / Edge 10W60

Vehicles:
- 70's GM Holden Kingswood with 202 cu in (3.3 L) 6 cylinder
- 80's GM Holden Camira with 1.6 L 4 cylinder
- 90's Audi with 2.3 L 5 cylinder
- All my motorcycles and push mowers

With the new century I've now become a Thinnie, and I've started using 15W40 mineral, 10W40 semi-synthetic, or 0/5W40 full synthetic.

 

[Silk]

I use 20W-50 in my BMW motorcycle, lowest temp has been -3c and it always starts no worries. Next change will be with Penrite V Twin, a POA/Ester, so a bit worried about oil leaks on my old bike. My Volvo has a blend based on 20W-50, and has given it's best economy on that. I often run 20W-50 in my daughters '94 Laser Lynx as it's an oil burner, and used to use it in my other daughters '89 Subaru Omega, but am now using 10W-40 as it's on very short runs and with 20W-50 the lifter tick never stopped, now it's stopped by the end of her drive.

I'm happy to use 20W-50 in anything, anytime.

 

[zeng]

Originally Posted By: userfriendly
Many SAE 40s have higher HTHS than some 20W50s especially at post-shear drain time.
I use and have used SAE 40 & 50 in just about everything including XW20 CAFE engines.

How many has imploded .... and probably still counting ?

 

[Gokhan]

Why run 20W-50 when there is 25W-60?

 

[FCD]

You should try it in your Corolla lol

 

[FCD]

Originally Posted By: userfriendly
Many SAE 40s have higher HTHS than some 20W50s especially at post-shear drain time.
I use and have used SAE 40 & 50 in just about everything including XW20 CAFE engines.

I really can't find any Gasoline rated Monograde oils locally.

 

[Nick1994]

Originally Posted By: Gokhan
Why run 20W-50 when there is 25W-60?

Why run 25w60 when there is molasses?

 

[FCD]

Why not SAE 70 + Lucas + Motor honey.

 

[Gokhan]

Originally Posted By: FordCapriDriver
Why not SAE 70 + Lucas + Motor honey.

SAE 25W-60 and SAE 60 are the highest viscosity grades.

 

[Nick1994]

Originally Posted By: FordCapriDriver
Why not SAE 70 + Lucas + Motor honey.
Why use SAE 70 + Lucas + Motor Honey when you can use Roof Tar?

 

[Samrsnow]

1987 BMW e28 535is. Go to brand of 20w50 has been Castro GTX since I owned a 528e previously that only ran GTX/fram for years. Recently realized it's specs aren't that great and doesn't carry enough zinc/phos for my 535is. I've recently ran a mix of Rotella/Delo 15w40 that worked great in the "winter" months here is Louisiana. Currently running Mobil 1 15w50 and the engine is strong as ever.

 

[FCD]

Originally Posted By: Gokhan
Originally Posted By: FordCapriDriver
Why not SAE 70 + Lucas + Motor honey.

SAE 25W-60 and SAE 60 are the highest viscosity grades.

I know but "unofficially" 70 grades do exist in Australia for example.

 

[Silk]

I guess I have to show this again...2E Corolla engine.

 

[SR5]

Penrite HPR 40-70 with no winter (W) rating, and 1450ppm Zinc.
KV100 = 30.5 cSt
KV40 = 319 cSt

 

[SR5]

Do you guys get this Castrol Edge 25W50 in North America ? It's easy to find in Oz.
Its's a Group 2 mineral oil with over a 1000 ppm Zinc, and designed for older big bore pushrod engines. It's API SG rated.
TBN = 8.3
KV100 = 21.0 cSt
KV40 = 204 cSt
HTHS = 6.1 cP

 

[Silk]

I used it in the Airhead, did a UOA and looked pretty good.