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TJ Enthusiast
I use the valvoline synthetic blend oil. Branded as max life.
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The problem with the oil debate is that there are too many variables that will lengthen or shorten engine life. How the vehicle is driven, where it is, average speed, oil filter, average trip distance and on and on. If you want your engine to last, don't beat it to death. Be gentle when it's cold until it warms up and even then, don't rev it like you're pissed off. Also, pay attention to it. Check fluids often rather than waiting for an idiot light to tell you there's a problem. This will get you far more than special and expensive oils and filters.
I wouldn’t push it past a year.At the risk of reviving an old thread, I have a question. What if you don't drive your jeep enough to run 3000-5000 miles in a year. How often should you change your oil if you barely use the engine?
At the risk of reviving an old thread, I have a question. What if you don't drive your jeep enough to run 3000-5000 miles in a year. How often should you change your oil if you barely use the engine?
Hi Jerry! Belated congrats on your son's wedding.Here in SOCAL I use a conventional Valvoline 10W-30 year-round. But if Valvoline were to disappear tomorrow, I'd happily run any major brand of engine oil... they're all superb now.
If I lived where it got really cold, I'd switch to a 5W-30 synthetic for the winter but go back to conventional 10W-30 once it started warming up. I've never been a fan of Mobil-1 after reading lots of reports of increased iron levels in oil test samples with that oil from Blackstone Lab's oil analyses.
Not Jerry but he would recommend 10w 30 conventional to his dying day lolHi
Hi Jerry! Belated congrats on your son's wedding.
I live in the Middle East and the winters are around 20C (68F) and the summers are a scorching 45-50C (113-122F). Would you recommend a 10W-40 oil or is 10W-30 also fine?
Additionally, would you advise to use synthetic, or non-synthetic oil?
This point has always been a concern with the longer oil change interval recs with synthetic oil. Oil viscosity has to do with average molecule length. My understanding is synthetic oil molecules are more uniform and thus when they start to degrade, the average length is more slowly effected. So, they can be run longer and still maintain viscosity. But that doesn’t make them any less contaminated after a certain number of miles than conventional. So regardless of oil type, I keep change intervals on the low side.You have succumbed to Amsoil's misleading oil life claims... what you don't realize by not changing your oil at the intervals recommended by Jeep is that your oil FILTER gets just as dirty as with any oil and you're leaving it in past its useful life. Engine oil picks up dirt, contaminants, naturally occurring acids, combustion byproducts etc. at the same rate no matter what the quality of the oil is. By leaving the oil filter in 2X as long as it should be you're asking for the filter to go into bypass mode.
I don't care HOW good an oil is, it still needs to be changed at the engine manufacturer's recommended intervals. Amsoil misleads their customers on a lot of things like that. They're laughing all the way to the bank thanks to the snakes in their marketing and sales department.
I don’t think stock TJ motors are that particular, so whatever is probably OK. But, if you are storing it in the winter, I think fresh oil every spring when you take it out makes sense.May I ask you fine folks your opinion? I certainly do believe in changing oil every 5k, but what if it takes 12 to 18 months to get those miles. Summer driving only, vehicle in a temp controlled building.thanks