Ken King said:New clothes and now an oil change, oh my, the world is coming to an end.
read you owners manual concerning any required break in period. I won't go to synthetic till after 10k miles.Kyle said:Mobil 1, Performax or some other Full Sythethic.
aps45819 said:Just noticed it's a 2004, how many miles on it?
...and if you got it new, why'd you wait 2 years to change the oil?
Synthetics resist breakdown much better than conventional, i.e. they'll last longer. If it's easy to get to the filter and you can change it without a complet oil drain you can be good to go for longer intervals. If you're going to change the oil and filter every 3k miles, don't think it's worth the extra expense.Airgasm said:55 K, bought it used about a month ago... Owners manual recommends weight/viscosity, but not manufacturers or synthetic vs. conventional.
I heard that story many times myself and changed over to sythethic on a 92 F-150 at 60K and a 1999 E-150 at 24k. Never had a leak.Floyd2004 said:If the Jeep has has ANY conventional oil in it then you are doomed to that and that only. Going from Conventional to syn. will break down most of your seals mush faster.
Floyd2004 said:If the Jeep has has ANY conventional oil in it then you are doomed to that and that only. Going from Conventional to syn. will break down most of your seals mush faster.
BUT if the previous owner used Full Syn. (stock for any DCX vehicle) then keep on using it. I Use full syn. and change it out every 5-7k with no issues. Its an 04' with 53k on the dial
EDIT: Oh yea, my car uses 5W-30 Mobil 1.
Airgasm said:Jeep? V-8, I-6?
Kyle said:I heard that story many times myself and changed over to sythethic on a 92 F-150 at 60K and a 1999 E-150 at 24k. Never had a leak.
Had a friend who changed over his 99 F-150 at 70-some Thousand miles and never had a problem.
Read up on the issue but I'd venture a guess that this is just one of those old wives tales left over from the days of compressed-fiber, cheap rubber and rope main seals.
After the initial break in (about 2 oil changes) you can convert to synthetic anytime. I have had several dozen vehicles and never once had an oil leak after switching to sythetic.CMC122 said:So my Yuxon that has 70,000 miles on it can definately be changed over to synthetic
After you switch it over how often do you change it? Isn't it longer intervals?Pete said:After the initial break in (about 2 oil changes) you can convert to synthetic anytime. I have had several dozen vehicles and never once had an oil leak after switching to sythetic.
Typically double the manufacturers recommended interval. If you have a Yukon you have the oil monitoring system that prompts you to change the oil when the computer calculates based on miles, engine revolutions and work load, just reset it and go again. You should change the filter and top off when prompted to change the oil, but changing the oil can go 2 cycles.CMC122 said:After you switch it over how often do you change it? Isn't it longer intervals?
I bet it will feel very wierd to resist the change the first few timesPete said:Typically double the manufacturers recommended interval. If you have a Yukon you have the oil monitoring system that prompts you to change the oil when the computer calculates based on miles, engine revolutions and work load, just reset it and go again. You should change the filter and top off when prompted to change the oil, but changing the oil can go 2 cycles.