my car has 58000 on it and i run it pretty hard so im wondering should i go with synthetic verses regular oil. i also put about three thousand a month on my car. if i use synthetic do i always have to use it from then on? what is the best synthetic?

 

Oil is a gimmick, a marketing ploy. I use natural, Poland springs water. Six quarts and my car runs like new. It’s a lot easier on the engine as well. You should consider it.

 

i'd use synthetic. mobil 1 is good.

 

Synthetic..................(Royal purple)
Thans what ive been using sor years,
Used it in my 96 max since the day i bought it sold it at 250,000 miles to a friend
And it now is close to 320,000 miles and runnin still using royal purple

 

Btw.......Im still using it!

 

If you're driving that much you should consider switching to Mobil 1 synthetic - the 15K version. Not sure that I would go 15K between changes but would consider 10K with a new oil filter @ 5K. What kind of dino oil are you running and what is your oil-change interval? You could probably get by with more than the recommended 3750 OCI given you must be driving mostly highway miles, but I wouldn't extend it beyond say 5K.

This should be in the Fuels & Lubricants forum by the way.

 

With than number of miles you should put an engine cleaner through if you switch to synthetic. I've heard if you switch to synthetic after having run dino for a while, the varnish that tends to build up will be cleaned off by the synthetic. This sounds like a good thing, but it could actually cause oil chanels to become blocked.

i believe Amsoil makes and engine flush for this purpose.

Ive never personally experienced this as I have always used Mobil 1 from day one.... It's just something I've heard.

 

synthetic is much better. there was an article i read online about amsoil synthetic oils, but it would apply to most brands. synthetic oil lasts about twice as long as natural because the oil molicules are uniform in size. natural oil has diffferent sized molecules, and the smaller ones break down faster and it does not lubricate as well because of this. if you ever changed your oil yourself, you can tell that natural oil is a lot "gummier" when draining from the oil pan than syn***ic. i have been using syn***ic on my v6 camry for about 70k miles, started at about 60k, and it purrs like a cat. toyota recommeded oil change interval is 5k miles under normal driving conditions, and with syn***ic that translates to about 10k on each oil change. generally syn***ic oils last twice as long as natural.

Added lubricity is another attribute of synthetics. The uniform diameter of synthetic oil polymers allows them to more easily slide over one another. The resultant reduction in friction shows up as more horsepower and torque and reduced internal engine wear.

Higher film strength, however is one of the major benefits of synthetics. Film strength is what keeps oil molecules from being pushed away from each other under pressure. Mineral based oil has a film strength of about 400 psi, while synthetics usually exceed 3000 psi. In an area where two metal surfaces meet, the film of oil between them prevents them from rubbing and wearing away at each other. Synthetics do a better job of this than conventional mineral oils. It takes more than seven times as much pressure to squeeze synthetic oils from between two surfaces than mineral-based oil. Consequently, synthetics are much better at keeping your engine like new.

http://www.smartsynthetics.com/infor...cles_index.htm

 

My ritual: Mobil 1 oil + Napa Gold filter. Oil change every 6K, filter change every 3K + top up... I started at 40K, have 70K on now after a year, no probs...

 

All the folks changing the filter w/out changing the oil -> are you working quickly to prevent too much oil from draining out while the filter is removed, or are you draining the reusing the oil?

 

I agree that is a great Synthetic oil. I run that on my Max and no problems so far. ROYAL PURPLE is awsome.

 

Nope, I replace the filter and top up with new oil... Usually requires less than 1 qt...

 

thanx im changing it now got mobil 1 and a fram tough gard. not to sure how much the oil filter affects performance so i just bought the most expensive one. lol

 

If you want to spend money on a quality oil filter, then get a OEM Nissan filter, or Mobil1, or WIX. Don't waste money on a Fram

 

whats the difference in filters other than price and sure grip and as***ic crap like that?

 

:attention Exactly like he said! Take the Fram back. It's common knowledge on this website that they are crap.

 

http://theoildrop.server101.com/cgi/...6;t=000513;p=0

Check the fluids/lubricants section for more details.

 

the OEM nissan filter does not let oil drain from the motor when your car is not running. this means when you start it the next morning, there are some oil particles left on the engine parts, and it runs much better from the start. the most engine damage occurs in the first 60 seconds in the mornings because of cold starts, where there is no oil flowing to lubricate the engine properly. so, the lesson is, use oem filters!

 

Yup, there was a nice writeup on filters somewhere... I'm trying to find the link... Overall:
#1: K&N, Mobil1
Close #2: AC Delco, Napa Gold, Wix (considering the price vs. #1 -> best value)
And so on...
FRAM was the last place...

 

Found it :-) Here it is:
http://minimopar.knizefamily.net/oilfilterstudy.html

 

nice link igzy. suz i'v been using the orage filters on my previous car. hmm...

 

Everything you ever wanted to know:
http://forums.maxima.org/showthread.php?t=227996

 

syn oil is a no-brainer, it protects better and is cheaper (with extended drain intervals). Stay away from Fram/Pennzoil/STP oil filters, they are complete garbage. Go with Mobil 1, purolator pure one, wix, or the nissan oem filter.

 

I ve used dino and syn and i really don't know if there is a difference just peace of mind i guess. I use mobil 1 or castrol syntec depending on which one is on sale, plus i use either mobil 1 filter or nissan oem. The mobil 1 filter seems of very high quality just from the weight of it. very heavy for an oil filter....

 

There is a difference and this is not a matter of discussion. Whether one perceives a difference is a different thing. Synthetics don't break down as fast and have a higher film strength. In addition, their temperature characteristics (pour point, vaporization point, flash point) is vastly superior.

 

OK, wtf are you talking about?

 

He's playing silly b#gger. Ignore him and maybe he'll go away, lol!

 

I guess its okay to use mobil1 filters with dino oil right?

 

mobil1 filters do the same thing as oem?.

 

Mobil 1 filters do this also. The nissan oem filter is a good filter, but the mobil 1 is better.

 

I'm almost certain that the Wix, baldwin, amsoil, and purolator pure one have the anti-drainback valve just like the nissan filter. The nissan filter isn't anything special. The nissan filter is on the level of the wix, badwin, or the amsoil filter, but the mobil 1/K&N and the purolator pure one are in a class by themselves.

 

I think the fram even has the anti-drainback valve, but it is utter crap and leaks.