mike9186

My recently acquired 91 Coupe spent its whole life in Memphis. The car has been reliably maintained with Shell Rotella 15W-40 Dino oil. I did my first oil change in the summer and used this oil too (easy to find at Advanced Auto Parts)

I want to drive the car when the temps here drop in the coming months and I was wondering if this viscosity is OK for Long Island winters?

thanks

Mike B

ChaseN

It doesn't get too cold in Long Island, does it? I say you'll be fine, no need to worry.

Better switch over to Brad Penn 20W50 when the summer comes, though. Anyone disagreeing with me is wrong - and their engine is on borrowed time!

beentherebaby

I'd idle the engine for 5 minutes before driving off in temps below 20 F. to allow the oil to reach critical areas and thin a little before using mid-range engine speeds. Definitely do not use upper engine RPM until the oil is up towards 180 F.

ChaseN

Your username is very appropriate for this discussion...search the archives to see what I mean!

Arrowhead

I would reccomend changing to a lighter weight oil. I live in NY and use a 10W-40 for winter. As far as what brand is a personal preference and has been beaten to death on this board. The W after the 10 stands for Winter.

buck_31

FWIW I have been using Castrol Sythetic 5w-40 year round (I am also on LI)............It is one of the "Porsche approved" oils, still caries the SL designation, etc...