Mobil one synthetic oil

[Scott]

Was at wally-world today and noticed they had ow-30 synthetic oil. I normally use 10-w30, synthetic. Is it ok to use the "ow" version or do I need to go hunt down the 10-w30, which they didnt appear to carry anymore..

[bigmac]

You need to go hunt down 15W40 CI-4+.

The 0W30 Mobil One would probably be OK for your lawn mower, though.

[Scott]

well if the 10w30 was dealer recommended, what now.. boat has about 310 hrs on it..

[bigmac]

Originally Posted by Scott

well if the 10w30 was dealer recommended, what now.. boat has about 310 hrs on it..

I'm sure your dealer is very smart, but I'd switch back to the oil that the ENGINE MANUFACTURER recommends.

[Scott]

never said they were smart. this is what they said they were using in their boats..is what u recoommend a synthetic? Is it mobil one?

[stuartmcnair]

no, it is a heavy duty diesel oil...Rotella T or similar...

[Scott]

?????????????

[bigmac]

Originally Posted by Scott

never said they were smart. this is what they said they were using in their boats..is what u recoommend a synthetic? Is it mobil one?

Your dealer uses it because he gets it cheap in bulk, not because it's good stuff. I would recommend a 15W40 oil that meets API specs CG-4 or better (current spec is CI-4+) just as is recommended by Indmar and by MasterCraft in your owner's manual. There are other oils that Indmar would find acceptable, but 0W30 isn't one of them, nor is 10W30.

Synthetic oil is pretty much a waste of money in this application.

Yes. The 15W40 is a diesel oil.

[Smitty]

The Mobil sythetic that I use is 15W-50. 0W-30 is for severe cold weather applications and will not do as good of a job protecting high rpm applications like marine engines. Rule of thumb: W = winter. This represents the cold temp rating of the oil. 15W-50 has a broader scope of protection over 15W-40. It will protect better if your engine ever over heats.

[trickskier]

Originally Posted by bigmac

You need to go hunt down 15W40 CI-4+.

The 0W30 Mobil One would probably be OK for your lawn mower, though.

Listen to THE MAN.....................Trust me, HE knows OIL......................