Recent Topics
Fram Ultra XG10060 Cutaway...
by AnthemBassMan
21 minutes 39 seconds ago
The Vole (MS) now deceiving users to install W10
by simple_gifts
29 minutes 0 seconds ago
5w20 + seafoam + hot weather + towing = ?
by meborder
Today at 03:15 PM
Chewbacca Mom & James Corden
by CharlieBauer
Today at 02:45 PM
This Radiator Looks Good to Me!
by Miller88
Today at 02:38 PM
Bill Cosby's sex assault case going to trial
by Mr Nice
Today at 02:25 PM
This is one reason I prefer to do my own oil
by SirTanon
Today at 01:37 PM
Recent discovery of SatbiliTrack failure Mode
by MolaKule
Today at 01:11 PM
Costco Insurance discountn going away?
by stockrex
Today at 12:56 PM
4 Wix Oil filters and 1 Mazda OEM AF (skyactiv)
by badtlc
Today at 12:48 PM
FYI, At&t Implements data caps today
by badtlc
Today at 12:12 PM
Top Tier Gasoline = only 5 miles more per tank?
by Hyde244
Today at 11:45 AM
Newest Members
WeekendWarrior, emily, lex73, showstopr30, any_user
57966 Registered Users
Who's Online
75 registered (Al, 440Magnum, 2oldtommy, 94astro, AnthemBassMan, 4 invisible), 1844 Guests and 102 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
57966 Members
66 Forums
249352 Topics
4081226 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 20 of 20 < 1 2 ... 18 19 20
Topic Options
#130424 - 05/01/05 04:11 AM Re: I am tired of everybody saying 20 wt oils exist only for gas mileage
moribundman Offline


Registered: 06/02/03
Posts: 23591
quote:
Well, would 75 in a minivan climbing the mountains of central PA on I-80 qualify??
Absolutely! [Smile]

Top
#130425 - 05/01/05 05:44 AM Re: I am tired of everybody saying 20 wt oils exist only for gas mileage
427Z06 Offline


Registered: 12/06/03
Posts: 7409
Loc: Austin, TX
quote:
Originally posted by 427Z06:
When testing a non-friction modified 15w40 HDEO and a friction modified dino 5w20 in particular engines, my experience has been that when they have non-friction modified 15w40 HDEO in them, they reached operating temperature is less time. My guess is, they were burning more fuel to maintain the same idle and moderate acceleration levels, thus the engines were generating more heat.

I just like to add to this, that once up to temperature, the friction modified dino 5w20 stabalized at a lower temperature than the non-friction modified 15w40 HDEO under moderate driving conditions.

Top
#130426 - 05/01/05 01:06 PM Re: I am tired of everybody saying 20 wt oils exist only for gas mileage
mechtech Offline


Registered: 08/11/04
Posts: 2387
Loc: Chicago area
Dr.A - Just because the pressure is the same doesn't necessarily mean that one oil is thinner/thicker/the same, than the other. The pressure gauge reads from the pump and relief valve operation, and the oil may be thinner at the cams, rings, bearings, where heat and pressure have great effect.

Top
#130427 - 05/01/05 06:31 PM Re: I am tired of everybody saying 20 wt oils exist only for gas mileage
AEHaas Offline


Registered: 01/09/05
Posts: 1325
Loc: Sarasota, Florida
If the oil leaves the sump at 180 F and maybe picks up 10 degrees on its way to the bearing it would be at 200 F at the entrance to the bearing. If if then picked up 50 F there it would end up at 250 F.

The thicker oil starts out at 240 F at the sump, picks up 10 and then 50 more through the bearing. It ends up at 300 F.

aehaas

Top
Page 20 of 20 < 1 2 ... 18 19 20