I am ready to change oil for the summer. I am not tracking the car, so I need something that will be right for summer driving.

The good news is that I do not have a lot of stop and go since I live outside the city.

What weight of Mobil 1 would be best?

Thanks,

 

Marv
There are a lot of previous threads on this. I use 15/50 but I hear Porsche are recommending 0/40 on all new cars. My car has 85K miles and I do not do much stop and go on my 34 round trip to and from work in Maryland - about same general climate as you I guess and I do not track.....I have no oil leaks and engine uses about a quart every 1000 miles.
It will be interesting to see what others are saying

 

Used Mobil 10W40 for years (80K miles on the car; totally dry and 2K miles+/quart). This in Steelertown; similar climate as Dayton.

Next time, check the archives - discussed umpteen times.

 

Ray that makes me feel somewhat lightened; here in the Middle East only 0W-40 Supersyn is available, I used 15W-50 Supersyn up till now on my 993 but it's no longer marketed in the ME. So I'm running 0W-40 on both my P-cars. Today is well above 100F.

BTW, I attended a tech presentation by Mobil on oils. In essence I think I understood that their "supersyn" labeled oils consists of 20% "supersyn" additives, 15% synthetic esters and 65% base stock. The "supersyn" additives has a patented anti-wear molecular structure, in that it reacts with the metal to form a protective fluid film at all times. From this I try to convince myself 0W-40 still is ok in very hot climate.

I noticed a new Mobil 1 product on the market in Europe last month, 5W-50 Supersyn "racing formula". I know the new McLaren uses it and I guess in ME it should be very suitable.

 

meant to say 0W40 (can't type and eyes aren't what they used to be)

 

I'm using Mobil 1 Extended Performance 15W50 here in So Cal. I'll probably mix 3-4 qts 0W40 with 15W50 for the winter (low temp is about 32 F).

 

Based on everything I have read on this site, the conclusion is to go with 15W50 for the summer, and 0W40 for your fall oil change. I live in the northeast so weather is comparable.

 

This is ongoing two sided answer - like "it depends". . I use 0-40W. My car can may sit a few days or more and I want the slightly thinner oil to be pumped quickly. Most wear occurs @ startup. After speaking with a senior Mobil 1 engineer, I am convinced for street driving, in my climate, 0-40W provides more than enough lubrication in my year round climate in the NE.

 

That's a valid point. On the other hand I sometimes think that a lot of this is just splitting hairs and I vacillate back and forth.

Maybe I should put half 0-40W and half 15-50W.

 

Hi Marv:

Use 15w-50 and your engine will be very happy for it.

The lighter stuff was really formulated for water-cooled engines and their greatly reduced operating temperatures.

 

Thanks!

 

I used to use 15w-50 Mobil 1 but as soon as we had a cooler (80 degree) day here in Hotlanta I would get an noisy lifter. Switching to 10w-30 solved the problem.

 

all dealers recommend light oil in all cars but i agree with steve our cars really love that thick stuff our oil is dual pupose.

 

Steve
Do you suggest 15/50 for all year or do you suggest changing for a lighter oil in winter....I live in Maryland...thanks

 

David:

I'd recommend the 15w-50 unless your are starting and driving the car in subzero weather.

In that case, the 10w-40 or 0w-40 is a better choice for when the temperature stays below 32 deg F.