5W50 or 10w60 on Maserati Ghibli SQ4 2017 / V6 ?

[Vonda]

car: Maserati Ghibli SQ4 2017
Please advise. The manufacturer recommends 5W40 engine oil for the 2017 model year, but 10w60 from 2017 onwards. The engine (allegedly) is not technically different at all (the same part numbers). It differs in software (including increased power from 410 to 430 hp). The engine is built by Ferrari but is based on a 3-liter version of the Pentastar.

I drive rather calmly, in 90% of cases in the lower rev range, but higher revs occur when overtaking.

I have been driving on https://millersoils.com/products/ee-performance-10w60/ for 2 years, but I live in Poland and temperatures in winter sometimes drop below 0 degrees Celsius for several months. Hence the idea whether an "intermediate" oil would be better for calm driving in such a climate: 5w50 https://millersoils.com/products/ee-performance-5w50/

 

[Andyd95]

I’d stick with 5W40.

 

[JavierH19]

More power being made on the same components means the components are subjected to more load so the need for more hths viscosity is warranted. I think it will be fine with that 5w-50 or 5w-40 as well if not driven hard.

 

[cheesepuffs2]

More power being made on the same components means the components are subjected to more load so the need for more hths viscosity is warranted. I think it will be fine with that 5w-50 or 5w-40 as well if not driven hard.

Agreed. It's likely that the more aggressive tune puts more force on the big end of the connecting rods to where they opted for a thicker oil to provide more cushion for the rod bearings.

I would personally use 5W-40 if this were my car.

 

[Vonda]

do you think that the 5% increased power was the reason for such a drastic change in the oil? On Maserati forums theories go more in the direction of the fact that too many engines fail on 5w40 oil (and they chose this oil to meet "ecological" requirements) and the change to 10w60 was supposed to reduce the number of failures... but these are just theories.

 

[Aston4]

Wouldn't think twice about going to at least 50w. Be gentle until full oil temp reached. If you don't have an oil temp gauge, install one. Porsche did the same thing and back specked to 50 weight all the way back to 1997. Too many engine failures out there from thin oil, especially timing chain wear.

 

[Vonda]

@Aston4
So You think to stay 10w60 will be better in my way of driving and temperatures on my climate ? Or better 5W50 ?

 

[Aston4]

In your climate, I personally would pick the compromise option, 50 weight. You're not running at high speed up 10 mile long hills at 115 degrees Freedom like we do in the American southwest, where engine and transmission oil tempertures get to terrifying levels.

 

[Patman]

I imagine it would be very difficult to make a 10w60 that actually stays a 60 weight for more than 2000 miles. Same with a 5w50 for that matter, I don’t think it would stay a 50 weight for very long.

 

[Aston4]

I imagine it would be very difficult to make a 10w60 that actually stays a 60 weight for more than 2000 miles. Same with a 5w50 for that matter, I don’t think it would stay a 50 weight for very long.

Many (most?) cars running 50/60 oil end up requiring oil change for age, or after track use, not milage.