For those running synthetic motor oil...
11-25-2008, 10:08 AM
#4
11-25-2008, 10:23 AM
#6
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Same as normal oil, synthetic doesn't last longer both are good for 6K miles and need a oil filter change.
Synthetic doesn't break down till a much higher temperature then conventional oils and it also will not get nearly as thick in the cold, minimizing the damage and all engines suffer on cold start till engine is up to ideal operational temperature.
Synthetic doesn't break down till a much higher temperature then conventional oils and it also will not get nearly as thick in the cold, minimizing the damage and all engines suffer on cold start till engine is up to ideal operational temperature.
11-27-2008, 03:21 PM
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plan to change it at 3000 but by the time i get around to it, its about 3800/4000
. using royal purple 5w 30. talked to dealer about using 5w 30 they said that mostly what they use.
. using royal purple 5w 30. talked to dealer about using 5w 30 they said that mostly what they use.
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11-27-2008, 04:57 PM
#8
JK Enthusiast
Same as normal oil, synthetic doesn't last longer both are good for 6K miles and need a oil filter change.
Synthetic doesn't break down till a much higher temperature then conventional oils and it also will not get nearly as thick in the cold, minimizing the damage and all engines suffer on cold start till engine is up to ideal operational temperature.
Synthetic doesn't break down till a much higher temperature then conventional oils and it also will not get nearly as thick in the cold, minimizing the damage and all engines suffer on cold start till engine is up to ideal operational temperature.
Full synthetics (at least the good ones, Amsoil, Mobil 1, Syntec, ect) when actually tested last 12k to 15k under normal conditions.
even though no US auto manual has a different oil change interval for synth, there are foreign countries that do. US is too litigation happy for the manufacturers to take that chance.
I have been doing 10k, or one year, which ever comes first, with good synth on all my autos for many years. Never had a problem.
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floridajpr (04-02-2020)
11-27-2008, 06:55 PM
#9
I change the synthetic oil & filter at 5 to 6K, but there is a lot of evidence to just do a filter change at every 5k, and top it off with fresh synthetic.
This results in minimum wear, as the vast majority of wear seems occurrs in the first 3k miles after a synthetic oil change, after that wear decreases to almost zero (untill the oil breaks down).
So when do you change all the synthetic oil, leave that up to oil analysis, or just don't ever change it all!
Me, I'm a 5k man myself.
This results in minimum wear, as the vast majority of wear seems occurrs in the first 3k miles after a synthetic oil change, after that wear decreases to almost zero (untill the oil breaks down).
So when do you change all the synthetic oil, leave that up to oil analysis, or just don't ever change it all!
Me, I'm a 5k man myself.
