Been using 15w/50 on summer What weight for winter

[killagt]

Im current running 15w50 mobil 1, im thinking running 10w/40 mobil 1 or maxlife. i live in the south, and our weather never go under 40degee. what you guy think, should I stick with 15w50 or go with different weight for winter. thanks

 

[rg200amp]

What kind of car/motor

 

[ZZman]

How many miles on vehicle?

Mobil 1, Maxlife Full Synthetic or Pennzoil Platinum would all be good.
A 10w-40 would work good all year round.

 

[HTSS_TR]

What car and what recommended in the owner manual ?

 

[aquariuscsm]

I used Mobil 1 15W50 year round for several years. I`m running RP 15W40 this winter and will bump up to RP 20W50 next summer.

 

[killagt]

98 Ford Mustang GT 4.6L v8, had bad valve seal.

 

[lexus114]

Originally Posted By: killagt
98 Ford Mustang GT 4.6L v8, had bad valve seal.


GC 0w30 awsome motor oil for your Mustang down their.Would serve you well,but I`m not sure about the oil problem.How bad is it?

 

[FrankN4]

I use Mobil 1 15W-50 year round in all of my vehicles and in all of my families vehicles and have been for 18 years. That is North Carolina, Northern VA, Eastern KY, and Dayton, OH.

 

[Steve S]

Keep on using the same oil that is the beauty of multi viscosity oils. They cover a wide range of starting and operating temperatures .