Join Date: Nov 2006
Location: Rhinelander, WI
Feedback Score: 0 reviews
Re: What Weight Oil in Cold Weather ?
i used to use the Mobil 1 Delvac 5w-40 when i worked my last job... they had it on the reel for the heavy equipment so we used it in our trucks... i used it year round and had no problems, summer or winter... i had better starting then, than with the motorcraft 10w-30 im using now. the one time i really used my truck and did some heavy pulling on some steep grades, in 85 degree, high humidity weather, the oil temp was at 225 and the engine at 226.. but thats the high as it got... "12,000 lbs, 33 lbs of boost, 3 gear locked TC, floored, going up hill at 69 MPH"= heavy towing im my definition..
2003 F-350 6.0L CC/SRW/SB 3.73 Auto..
Edge Juice Platinum w/ Attitude just to monitor
Xcal2 w/ID tow w/JAKE,Street,Extreme Street
K&N FIPK kit
NO TURBO or ELECTRIC PROBLEMS
3 injectors, 1 set of head gaskets @ 95,000 miles
rebuilt tranny, plates and soleniods