Recent Topics
Mazda Miata ridiculous oil change interval
by Baveux
10/21/14 09:48 PM
2 piece engine block on Ford's new 2.7 EcoBoost V6
by gonefishing
10/21/14 09:47 PM
Sears Die Hard Platinum
by StevenR
10/21/14 09:35 PM
2015 VW GTI, one of the best under $30k?
by buster
10/21/14 09:01 PM
Lone wolf strike in Canada?
by DNVDMAX
10/21/14 08:59 PM
Kawasaki 175 Old Enduro Carb set up....Advice ?
by Rudy1999 250
10/21/14 08:53 PM
Low Beams too dim
by BrandonVA
10/21/14 08:48 PM
Bio clean for a slow drain?
by supton
10/21/14 08:10 PM
KIA and Honda 0 or 5/20
by pair of Blazers
10/21/14 07:30 PM
TGMO 0W-20, 9,950 mi on oil, 2012 Elantra GLS,127K
by schuylkill
10/21/14 07:09 PM
Oil wieght for 360 magnum
by pjc360
10/21/14 07:06 PM
Anyone using Cooler master Elite Desktop?
by FirstNissan
10/21/14 06:53 PM
Newest Members
ArtGarcia, 12e, AnonyBliss, Rits, BMEP
51659 Registered Users
Who's Online
109 registered (andyd, actionstan, 901Memphis, -SyN-, 74DartSport, 11 invisible), 1579 Guests and 174 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51659 Members
64 Forums
221033 Topics
3493647 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Topic Options
#761083 - 11/03/06 06:14 AM Flashpoint Testing Method ASTM D-92 vs. ASTM D-93
silverbullet Offline


Registered: 10/12/05
Posts: 62
Loc: Northern California
Does anyone know what the difference is in the test methods between the two?

I recently checked the Dino Pennzoil 5w30 flashpoint as 216 deg. F (ASTM D-93) and Pennzoil Platinum 5w30 flashpoint as 196 deg. F (ASTM D-92).

At first I thought, why would the Dino Pennzoil have a that much of a higher flashpoint than their "best" Platinum line. Then I realized the test methods were different. So it led me to the question of what's the difference in the two methods?

Top
#761084 - 11/03/06 08:01 AM Re: Flashpoint Testing Method ASTM D-92 vs. ASTM D-93 [Re: silverbullet]
Blue99 Offline


Registered: 09/27/03
Posts: 2233
Loc: Wisconsin
ASTM D-92 is the Cleveland Open Cup test.

ASTM D-93 is the Pensky-Martens Closed Cup test.

The closed-cup method prevents vapors from escaping and therefore usually results in a flash point that is a few degrees lower than in an open cup.

Base oils typically are 220C+ flashpoints, so it is the volatility of an additive that is producing the lower flash in a fully formulated motor oil.

Top
#761085 - 11/03/06 03:10 PM Re: Flashpoint Testing Method ASTM D-92 vs. ASTM D-93 [Re: Blue99]
Primus Offline


Registered: 07/29/03
Posts: 886
Loc: Kiev, Ukraine
D-93 value is usually about 20 deg C lower than that of D-92


Edited by Primus (11/03/06 03:11 PM)

Top
#761086 - 11/03/06 08:20 PM Re: Flashpoint Testing Method ASTM D-92 vs. ASTM D-93 [Re: Primus]
bruce381 Offline


Registered: 06/23/05
Posts: 3324
Loc: Millbrae, CA
All correct and to add I have always used the PMCC for flash under 200F for light distillates.
bruce

Top