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General Forums => The Mess Hall => Topic started by: jeepboy21 on December 09, 2005, 12:03:22 PM
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I run mobil 1 synthetic 15w50 i know it is too thik for winter driving. i was wondering wat a good weight oil to run for the winter is? i am thinking 5w30 but really dont know. any help would be appreciated.
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I run mobil 1 synthetic 15w50 i know it is too thik for winter driving. i was wondering wat a good weight oil to run for the winter is? i am thinking 5w30 but really dont know. any help would be appreciated.
You got the right idea. 5w30 would be good.
I usually run 10w 40 in the summer and 10w 30 in the winter. Never has failed me.
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You're location would help and what the temp's are like there.
Since I'm in the West Coast and at a lower elevation, I don't really worry about my oil that much. Only occasionally will it drop below freezing and my Jeep is garaged. I run Mobil One 5W40, I think.
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sorry didnt include location. in portland, OR gets below freezing here in the winter on a regular basis. I head to the mountain to go sking quite frequently.
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Man 15w 50 sounds like it would be pretty think. Do you notice a cahnge in gas mileage or anything with it.
BTW I run Mobil1 10w30 year round. We have been in the teens so far this winter and usualy around 80 in the summer here in WV
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Man 15w 50 sounds like it would be pretty think. Do you notice a cahnge in gas mileage or anything with it.
yeah it is thick but it keeps the 2.5L w/ 170K happy. not difference in gas mileage. it runs much better with the thick oil in spring, summer, and fall this is first winter running this thick and think i need something thinner
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After my 91's original 2.5 passed 150k miles I started running Castrol 20w-50 year round to help cut down on blowby. When it passed 200k I started mixing a quart of 80w-90 with the 20w-50. Still ran good when I swapped it out @ 244k miles. But it's blowby was so bad I had to change the airfilter every week, even with a catch can. I've been running 10w-30 in the swapped in 97 2.5.
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jeep recommends 10-30 all year, I think. It should tell you in the manual if you have one. If nothing else there is always trial and error. I would run 10-30 and switch to 5-30 with any problems. My motor started blow by so bad that I ran 10-30 then 20-50 then mack bulldog15-40 diesal blend then finally straight 50 before I tore the motor down. It was still running beautifully with the exception of it lokking like a fire extinguishers was going off constantly under the jeep going down the road. I drove about 40miles a day and it burned 4qts a day. Good thing I worled in a diesal shop at the time with bulk oil tanks that nobody monitored!! I carried three, gallon washer bottles full of oil behing my rear seat all the time.