School me on the Mobile 1 synthetic oils please

[survivorman]

ok guys starting to do my own oil changes....need to know what I should be using or if it matters....I want to stick with the Mobile 1 but have no clue on grades I live in Florida what is the best grade for me?


also on a side note my wife has a Mercedes C240, the place I took it to last to change oild used synthetic 5W/30 called Mercedes they said there recommendations are 0w/40 does it matter? no issues so far and I will probably use the 5w/30 on hers since its easy to find in 5qts at Walmart.....is 5W/30 ok to use on my FJ?


would be nice if we can keep it all the same.

[1911]

Yes, 5w-30 is fine.

[jayman]

survivorman previously said:

called Mercedes they said there recommendations are 0w/40 does it matter?

I've used Mobil 1 European Car Formula 0W-40

Mobil 1 0W-40

in my FJ with excellent used oil analysis results. I would have no reservations using it, especially in Florida

However, I actually DO have an issue with you using regular Mobil 1 5W-30 in that Mercedes. The regular Mobil 1 does NOT meet the MB 229.3 or MB 229.5 specs. Out of the entire Mobil 1 lineup, only Mobil 1 0W-40 meets those tough specs

For some reason, Mobil 1 0W-40 has become very hard to find up here. I switched to the made in Germany Castrol Syntec 0W-30, which also meets the toughest ACEA specs, and MB specs. So far, its easily available at the Canadian Tire nationwide chain

[survivorman]

thanks everyone........yea I think I am going to stick with the 5w/30 though......have not had any issues with it used so far in the mercedes.....and here is the kicker its not even mobile 1 its the companies brand......and it cost me $90 to get done.....they told me if we use mobile 1 its more.........never again from now on I do it on my own

[Blue07Tank]

what about the mobil 1 0w-30 in the fj? how does that stack up against the 5w? any differences?

[jayman]

survivorman previously said:

have not had any issues with it used so far in the mercedes.....and here is the kicker its not even mobile 1 its the companies brand

The Mercedes 5W-30 isn't made by Mobil, it's either Castrol, Agip, Aral, etc. The oil is specifically formulated to meet the MB specs I mentioned.

Mobil 1 0W-40 easily meets those MB specs too, but no other Mobil 1 oil in the lineup does

I went to the UK site for BP, and according to their handy lubricant advisor, your car they recommend BP Visco 5000 5W-40, a synthetic; or, Visco 3000 10W-40, a blend

Like Toyota, there are plenty of Mercedes dealerships in North America that won't use the correct oil, will substitute without your knowledge but bill you for the expensive stuff, etc.

Doesn't that car hold 8 litres of oil? It doesn't require an oil change more often than once a year or every 16,000 miles

Blue07Tank previously said:

what about the mobil 1 0w-30 in the fj? how does that stack up against the 5w? any differences?

The 0W-30 will offer better cold start performance, especially below 0 F. At operating temp, in summer, the same performance as the 5W-30

If your winter temps are consistently below 0 F, especially below -20 F, run a 0W-30, 0W-40, or 0W-20

Note, I have provided oil analysis on all three used in my FJ. I had the best results with Mobil 1 European Car Formula 0W-40. If you live in Arctic conditions, the 0W-20 would be most appropriate

However, after only 3,000 miles, the 0W-20 experienced high nitration and actually thickened up to the xW-30 range. If I lived in Arctic conditions, I'd probably use the oil, but change it frequently.

Am currently running the made in Germany Canstrol Syntec 0W-30, as its far easier for me to find up here. When I change the oil sometime this month, I'll send off a sample and report back

Running the dealership 5W-20, Mobil 1 0W-30, Mobil 1 0W-20, and Castrol Syntec 0W-30, guess what the difference was in fuel economy?

None whatsoever

[DEWFPO]

Blue07Tank previously said:

what about the mobil 1 0w-30 in the fj? how does that stack up against the 5w? any differences?

I ran M1 0W30 last winter and the engine spun like it was 70 degrees out even when it was -20F. The engine was a little louder with it in but it seemed to work just fine, the FJ didn't use any oil and as Jayman said, no noticeable change in MPG.

DEWFPO