Syntec VS. GC Syntec

[JAG]

I've read that for an ester to break down into an acid and alcohol takes extreme heat and high humidity. Inside an engine this probably isn't usually the case (my guess). Different esters have different levels of hydrolytic stability as well, and I'm sure good companies are on top of that. An example of a super long drain, primarily ester oil is Motul E-Tech 0W-40; it meets VW 503.01 spec and has proven it can go the distance (~16k miles) in UOAs too (TBN-wise).

 

[GMorg]

JAG,
My recollection from organic chemistry is that it takes water and either time, heat, or a catalyst. Or, it takes a combination of time/heat/catalyst. Further, I would suspect that Cu alloys could suffice as the catalyst. My guess is that most esters are additized to deal with the hydrolytic stability and the resulting degradation. As long as the acid is neutralized (if actually formed), it really doesn't matter.

 

[buster]

...many ways to formulate a good oil. You can use lower base groups, with a good additive package and achieve good results. You can use the most stable base oils (Esters and PAOs) and also achieve good results. Just depends on the cost, chemist and application. That is how I look at it.

My recent chat with Maxima has convinced me that esters are superior to PAO's in almost an every case (cold/hot etc.). It just depends on what specific esters you are working with and what your needs are. Cost is the biggest factor why most don't use esters.

 

[e36'n]

Does anyone know off hand which oils meet the VW 503.01 requirement?

 

[GMorg]

e36'n,

This is a list that I have found. I cannot confirm its accuracy.

AD Parts AD SHT Plus + SAE 0W-40 50301
Addinol Extra light MV 038 SAE 0W-30 50301
Agip Agip 7006 SAE 0W-40 50301
Aral Aral SuperTronic SAE 0W-40 50301
BP BP Visco 7000 Special SAE 0W-30 50301
Bucher AG Xperience FS-X SAE 0W-40 50301
Bucher AG Xperience FS-X SAE 0W-30 50301
Castrol Castrol Formula SLX SAE 0W-30 50301
Castrol Castrol Formula SLX Turbo Diesel SAE 0W-30 50301
Castrol Castrol Syntec SAE 0W-30 50301
DEA DEA Ultec SYN-T SAE 0W-30 50301
Elf Elf Excellium LDX SAE 0W-30 50301
Fuchs Fuchs Titan Supersyn SL SAE 0W-30 50301
Fuchs Labo RC SAE 0W-30 50301
Fuchs Supersyn SL SAE 0W-30 50301
Galp energia Galp Formula 503.01 SAE 0W-30 50301
Galp energia Galp Formula 50301 SAE 0W-30 50301
Ginouves York 748 SAE 0W-30 50301
Huiles Labo Labo RC SAE 0W-30 50301
Kuwait Petroleum Q8 Formula Special SAE 0W-30 50301
Liqui Moly Liqui Moly Synthoil Longtime SAE 0W-30 50301
Meguin megol Motorenöl Super Leicht Lauf Multisynth SAE 0W-30 50301
Mitan Alpine RSL 0W-40 vollsynth. SAE 0W-40 50301
Mobil Mobil 1 SAE 0W-40 50301
Mobil Mobil 1 Turbo Diesel SAE 0W-40 50301
Modrica Optima Magnum Plus SAE 0W-40 50301
Motul Motul 6100 LL-01 SAE 0W-30 50301
Motul Motul 8100 E-tech SAE 0W-40 50301
MRD Motor Gold Highline SAE 0W-30 50301
Oel-Brack Quaker State Synquest SAE 0W-30 50301
Oel-Brack Midland Synqron SAE 0W-40 50301
OMV OMV full syn SAE 0W-40 50301
Panolin Panolin Racing Synth DC SAE 0W-30 50301
Pentosin Pentospeed 0W30VS SAE 0W-30 50301
Repsol Repsol Elite Cosmos SAE 0W-40 50301
Shell Shell Helix Ultra SAE 5W-30 50301
SRS Schmierstoff Vertrieb Wintershall ViVA 1 ecosynth SAE 0W-40 50301
SWD Concep-Tech VS SAE 0W-40 50301
SWD Primus VS SAE 0W-40 50301
Teboil Teboil Diamond Plus SAE 0W-30 50301
Texaco Havoline Synthetic DS SAE 0W-30 50301
Unil Opal Opaljet 32 S SAE 0W-30 50301
Valvoline Valvoline Syn Power SAE 0W-40 50301
Valvoline Valvoline Synpower MXL SAE 0W-30 50301
Valvoline Valvoline SynPro SAE 0W-40 50301
VAPS VAPSOIL 50301 SAE 0W-30 50301
VAPS VAPSOIL SYN 030 SAE 0W-30 50301
Veedol Veedol Syntron SAE 0W-30 50301

 

[e36'n]

Thanks very much.

 

[GMorg]

Am I going crazy or was this thread much longer earlier today?

 

[e36'n]

Add Amsoil 5w-40 European Car Formula to the list.

 

[AndyH]

quote:

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Originally posted by e36'n:
Add Amsoil 5w-40 European Car Formula to the list.

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Amsoil states this oil is "recommended for European and North American gasoline or diesel vehicles requiring any of the following worldwide specifications:
(SNIP)
VW 502.00, 505.00, 505.01"

I don't think "recommended for" and "approved" are the same thing.