Winter time blues

[canon3383]

I know this has been brought up before but I'd like to get my ducks in a row. With my truck being cold blooded prepping for winter had been on the back burner, I'm changing the oil this weekend and ran Shell Rotella T4 15w40 all summer and the truck ran great, now not so good until its warmed up. Something was said about NOT running Synthetic in the 2.4L, I saw Rotella has a

Shell Rotella® T5 Ultra 10W-30 Synthetic Blend and would like to use it but I don't want oil leaking everywhere. Advice Please. All other fluids are -25 below.

 

[datzenmike]

T4 is also available in 10w30 try that. Saw some yesterday. 

[canon3383]

I will get that, 15w40 at 27 degrees makes for a very unhappy engine. I also use the Wix 51515 oil filter, thanks for the help.

[DIY 1985]

I got a couple of OEM Nissan filters the other day, haven't installed them.  Gonna change oil soon, getting seriously cold.  They look like a bit less stretch on the power steering pump hose, appearing a bit stubbier.

[datzenmike]

I don't drive my L20B in the winter but one year I did and all the other times I would fire it up every month. Didn't notice any big problem starting down to 25F? The oil is only thick on the start and thins as it warms. Obviously thicker oil doesn't flow as well so thinner in the cold is better or a short warm up before putting a load on it. I have an oill temperature gauge and you'd be surprised how long it takes oil to warm up. I bet as it gets near zero it would turn over slower and slower. It never gets that cold here and I also have a Maxima 6 cylinder gear reduction starter. Your oil choice should be based on the lowest or highest temperatures you expect to see before the next oil change. 10w30 is probably the best overall weight. I run only in the late spring, summer and fall and rarely below 50F so thicker is ok.