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#4442028 - 06/26/17 02:43 PM Delo XLE 10W30 vs Delvac 1300 10W30 - Explain This
George7941 Offline

Registered: 05/10/05
Posts: 2158
Loc: Toronto, Canada
Delo 10W30 Pour point -46C, MRV @ -30C is 20400 Mpa.s. Details here
Delvac 1300 10W30 Pour point -33C, MRV @ -30C is 18600 Mpa.s. Details here

In spite of Delo being a synthetic blend and having a much lower pour point, it is a thicker oil at -30C?

Also both Delvac 10W30and 15W40 have the same pour point of -33C, which is odd. When I phoned Tech support at Mobil says the pour point values are correct.
2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

#4442121 - 06/26/17 04:58 PM Re: Delo XLE 10W30 vs Delvac 1300 10W30 - Explain This [Re: George7941]
bullwinkle Online   confused

Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
I wasn't aware Delo's ISOSYN was considered syn or syn blend, and maybe Mobil's "severely hydro-processed base stocks" are close enough to synthetic to narrow the gap. I would use whichever I could get easily, for the right price, all day long.
06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

#4442162 - 06/26/17 05:52 PM Re: Delo XLE 10W30 vs Delvac 1300 10W30 - Explain This [Re: George7941]
Dyusik Offline

Registered: 09/26/14
Posts: 1982
Loc: US-WA
Just brain storming, but I have a feeling Delo uses a heavier base stock and less vii, with their heavy numbers.
95 Cherokee 190K DELO 10W30,XG8
07 IS250 97K FB ?w??,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K 76 20w50,1515
14 RX450h 30k PP 0w20,NAPAG

#4447435 - 07/02/17 01:04 PM Re: Delo XLE 10W30 vs Delvac 1300 10W30 - Explain This [Re: George7941]
A_Harman Offline

Registered: 10/01/10
Posts: 6921
Loc: Michigan
One of the oil formulators on BITOG could explain why an oil with a higher pour point could have a lower MRV reading.
But if I was looking for an oil with better cold flow properties, I would pick the one with the lower MRV reading. Delvac 1300 in this case. MRV is a more relevant measurement to what actually happens in an engine in cold conditions.
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

#4447445 - 07/02/17 01:16 PM Re: Delo XLE 10W30 vs Delvac 1300 10W30 - Explain This [Re: bullwinkle]
4WD Offline

Registered: 09/21/10
Posts: 6378
Loc: Texas
Some of these in 15w40's made with GII+ at around 11% NOACK and +4 HTHS are a great bang for the buck ...

I'll take them over T6 if you don't need 5w ...