ALFAGTV6.COM

Does anyone know the difference between regular Mobil 1 15-50 and

Mobil 1 High Mileage 10-40 (http://www.mobil1.com/USA-English/Motor ... 0W-40.aspx)

and

Mobil 1 Extended Performance 15-50 (http://www.mobil1.com/USA-English/Motor ... 5W-50.aspx)

Of the three, which is preferable for use in a GTV6 with 75k miles on it?

Mobil 1 0w40 761 876 167 SM SYN
Mobil 1 0w40 796 907 178 SM SYN
Mobil 1 0w40 808 976 185 SL SYN
Mobil 1 0w40 706 834 148 SM SYN
Mobil 1 15w50 952 1030 41 SM SYN
Mobil 1 EP 15w50 1193 1376 228 SL SYN
Mobil 1 EP 15w50 1062 1279 79 SM SYN
Mobil 1 EP 15w50 906 1024 72 SM SYN
Mobil 1 EP 15w50 1315 1428 226 SL SYN
Mobil 1 mx4t 10w40 1277 1460 188 SG SYN
Mobil 1 mx4t 10w40 1411 1623 188 SG SYN
Mobil 1 R 0w30 1399 1536 178 SG SYN
Mobil 1 Super Syn 15w50 1343 1390 205 SL SYN
Mobil 1 Truck & SUV 5w40 1034 1247 51 CI-4 SYN
Mobil 1 V Twin 20w50 1329 1949 204 SG SYN
Mobil 5k Clean 10w40 660 1028 SM DINO
Mobil High Mile 10w40 527 1021 SM DINO
1name 2viscosity 3Phosphor 4Zink 5MOS2 6API code 7mineral/synthetic

for alfa engine best oil is with lot ot P Zn (ZDDP very good anti wear agent)
flat tappets and cams love it so u can compare shitty high mile(low antiwear and mineral sux) to EP API SL

oops 5th number is Boron, substitute for MOS2

I'm sorry, but I simply don't understand the reply. What are the differences among the 3 grades of Mobil 1, and which is preferable for use in a GTV6?

Thanks,

Richard

Mobil EP API -SL is much better than high mileage one !

Mobil 1 V Twin 20w50 1329 1949 204 SG SYN

hmm that looks like it has lots

I like to run 0-40 but I think I might start tossing in a qt of Twin 20w50 for the cams

I have two 1986 GTV6s that are running very well. I want them to continue to do so. I became very concerned about what kind of oil I am using once I learned that the EPA has required oil companies to remove ZDDP from their oils because of the mandated 100,000 mile catalytic converter requirement. Based on research I have done and an extensive dialogue on the subject on the Alfa Bulletin Board, I concluded the better choice for oil as compared to Mobile 1 is Valvoline VR-1 Racing Oil Synthetic in the black container. It is high in ZDDP which our flat tappet engines need to avoid wear. It does not require an additive such as ZDDPlus as does Mobile 1. Or so it seems. I am still doing research and can keep you posted.

I always avoid Mobil 1 to avoid problems. Nothing but bad experience with Mobil 1 whatever the engine.

When I had M1 15w50 in my V6 it just DRANK OIL like a drunkard.

I switched to Castro Syntec 5W50 and it was much better.

But unfortunately it's SM rated now, so the zddp content went down. So I switched to Amsoil 20w50 Z-ROD.