Oil question

[frosty2]

Hi all I have a 73t with a 2.4 and have always been running VR1- 20W50 as that seems to be one of the well liked oils on this forum.
My question is because I live in Ontario Canada and I’m a weekend driver and our temperatures will vary from 40ish to 90ish on my driving days is the 20W50 to heavy of an oil for my climate. I see Valvoline also has a VR1 10W40.
Thanks for any thoughts.
Mike

[Otter74]

You could run 10W40 if you want to, but 20W50 is perfectly fine for those temperautes. I drive my car in roughly the same temperature range and have always used 20W50.

[PeteKz]

Do you ever get high temperature on your oil temp gauge? If so, the 10w-40 may run a little cooler because you can get more oil flow through the bearings and other parts, and thinner oil will cool a little better in the oil cooler. But this is pretty minimal, and may not make a noticeable difference in your engine and driving conditions.

[silverlock]

I run VR1 20W50 in my SC in the north-east USA (NYC and surrounds), which means spicy 90-100 deg summers with traffic and plenty of 30-40 degree days in early winter before they salt everything.

Certainly no overheating issues, even when crawling back into the city on a Sunday afternoon post-drive.

[Schulisco]

Mike, I wrote here some things about using oils as I do in Germany. At the end I posted an oil recommendation taken from a SCs user manual. See the temperatures there to compare against your operation profile:
https://forums.pelicanparts.com/porsche-911-technical-forum/1137428-post-winter-hibernation-restart.html#post11961347

Thomas

[frosty2]

Thanks everyone for the replies, I’m in Florida for the winter ,not with my 911 but I always buy a case of oil to take back with me in the spring so just wanted to post this question before buying.
Pete my temperature gauge may rise a little with some spirited driving but not very much so thanks for that.
Thanks Thomas for the little write up this stuff just eases my mind as I am always wondering if I am using to heavy of an oil for my climate as it runs very well and I don’t want to force an engine rebuild for the wrong reason.
Thanks everyone very much.
Mike

[Schulisco]

Porsche recommends the own 20W50 oil as well for all early 911's up to the 2,7 engines.

https://www.porsche.com/usa/accessoriesandservices/classic/genuineparts/producthighlights/motoroil/

On my highmiler 3,0 SC I also use the 20W50 with succes: sounds better, almost no oil consumption. I would use it on all 911 F&G body cars, especially with high mileage. Of course it depends on ambient temperature and operating conditions. When using the car during winter times on a regular or daily basis a 10W40 would be a better choice then.

[frosty2]

Thanks Thomas, I don’t take it out of the garage during the winter so my 20W50
Should be good. I’m a snow bird and head south first of November and back home in April.