M1,VSOT,LC20 in 3800 V6

[lght1]

Hi

After 2200 miles on this Mobil 1 10w30-VSOT-LC20 brew, the oil has turned very black/brown with "0" consumption it appears.

As I remember, Mobil 1 always needed a bit of top off with these engines compared to GC which never seemed to need any.

I wonder if VSOT increases the viscosity to GC like levels?

I plan in late October of next going to a "bridge fill" of Mobil 7500 mix of 5w/10w-30 which will stay until december, then Mobil 1 5w30 until after cold weather goes in March. Then GC will take over.

For the winter fill of 5w30 Mobil 1, how much VSOT? I really dont want to thicken that cold Mobil 1 fill any.

 

[nickmckinney]

Check out my other post on oil consumption at 8K. A theory I am finding is that VSOT cleans out sticking ring packs very quickly, both lowering oil consumption and raising gas mileage at the same time (if the rings were indeed the cause).

 

[Bill]

quote:

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bobo, VSOT has the adds your motor oil should/would have if the manufactorer was not low balling you, with some surfactant to spread it all around. Generally a bit thick. Boosts the add pack of the oil it is added to if compatible.

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from bitog link:

Information about VSOT & LC

I think the LC is cleaning your engine and turning the oil dark,
also, using a PAO such Mobil 1 can have a cleaning effect, PAO's oil formulations do clean the engine, if you will due some searching in the BITOG threads you will find a test that Bob did a few years ago, Mobil 1 did some cleaning of seals that were used in the test.

Bill

 

[Triple_Se7en]

Half-bottle (7.5 oz)

Your premature darkening is more common with LC20 than VSOT.