key difference in a set of examples.

[Francis]

Now I know this is bound to start some arguments, and this is not what I'm trying to do here at all.

What I am trying to sort out is the key difference in a set of examples.

Now whether you chose to believe it or not, here in OZ the Chevy engines used in late model Holden's had issues with oil consumption when used with Mobil 1 engine oil. After a heap of engine swaps at a cost to Holden they told all their customers to use quality mineral oil and the issues have since gone away or decreased.

SO my question is if (and lets just say it did for this exapmle) Mobil 1 caused this problem, would say a Synthetic oil like BP Visco 5000 that is said to be a Group 3 have the potential to cause the same issue? OR is the Group 3 type of oil different to that of the Mobil 1. (Did Mobil one change from a type of synthetic or is it still the same as say 5 years ago?)

 

[Doug Hillary]

Hi,
Francis - the issue of high oil consumption in SOME V8 engines had nothing to do with lubricant used (of any Brand).
Only SOME engines were affected

As I recall there were a number of very serious quality control issues at GM concerning SOME of these engines and just one for instance was the oil capacity! This may have been related to installation issues in the engine's conversion

GM specified M1 10w30 and still do. Some vehicles were tested using M1 5w-50 and consumption went down slightly in SOME cases but of course it only "masked" the real Technical issues

Mobil's Tri-synthetic formulation has been superceded by SuperSyn - and of course API driven Quality formulation changes have progressed to SM now

Regards
Doug

 

[Francis]

yes that may be so, but I was more refering to the type of oil that Mobil was at the time that this was happening and to the type of oil the BP Visco is which is a Group 3. So is the Mobil 1 a Group 3 and was it back when the Gen3's were new?

 

[Merkava_4]

Quote:
Now whether you chose to believe it or not, here in OZ the Chevy engines used in late model Holden's had issues with oil consumption when used with Mobil 1 engine oil.


Which viscosity grade? If it's their 5w30 or 10w30, that wouldn't surprise me at all; there's been a lot of consumption issues with those two grades of Mobil 1 along with some of their 5W-20 on this board.

 

[mitchcoyote]

another mis-guided rumour....

 

[Merkava_4]

Not entirely; if you do some searches under "Mobil 1" you'll find all kinds of posts about consumption along with noise and elevated iron numbers.

 

[mechtech2]

M1 is sure different than it was 5 years ago.
Some things better, some viewed as worse.

 

[BarkerMan]

If you have switched brands or types of oil and fixed the problem you have done just that, fixed it. You have not yet diagnosed the problem. You can say what you like about the situation but you could be wrong.

 

[buster]

Originally Posted By: mitchcoyote
another mis-guided rumour....

I agree. In some cars, maybe M1 does show higher oil consumption but I've never experienced this nor have my family members that all use it.

 

[Max_Wander]

mobil 1 and lower tension ring designs/certain hone finishes dont work too well together. M1 to me, has always had that "metal soaking" effect to it. One of the fluids they use really has a tendancy to "creep and seep" You can even see this happening on the bottle (moreso than other oils). Maybe it has to do with saturation? I dont know.. but for some reason i've always seen the correlation.