synthetic oil VS regular motor oil HELP?

Question

Is it a good idea to switch to synthetic oil?
I have a 1990 nissan 300zx with 75,000 miles

Thanks for all the replys,I must add that I live in Las Vegas and it gets pretty hot in summer

Answer 1

I concur with most of the answerers. Here is a link pertaining to the myths of synthetic oil.

http://www.enhancedsyntheticoil.com/Ten_Myths_About_Synthetic_Lubrication.htm

Answer 2

I wouldnt. I would continue to use regular oil, and if it is consuming a little TOO much oil, I would use a lucas additive. You can also switch over to a high milage oil if you would like.

It is generally not a good idea to switch back and fourth between synthetic and regular motor oil. If your going to make the switch, your commited.

Alot of people midlessly believe all of these commericials, and feel that synthetic oil is the ONLY thing to use and that the world will end if you dont. Thats not true. Also, dont buy this "10,000 mile oil change" bs. You STILL need to change oil often. It isnt so much that the oil breaks down, but it loads up with contaminants and particles. No oil, synthetic or not, is going to prevent this from happening.

Keep running regular oil, and change it often. As I mentioned earlier, If you feel it is consuming too much oil, I would consider a lucas additive. I am a mechanic and we rarely use synthetic oil, and some of our customers cars have over 200,000 miles on them. A good customer came in today with his suburban. 1990 with 184,000 miles. Oil changed religiously, and no major problems.

Jim

Answer 3

I tried synthetic oil and rear differential lube. I rebuild my own engines. I never lost engine connecting rod bearings or rear wheel bearings until I started using a major brand synthetic oil and lube. If you insist on running an engine without coolant, then synthetic oil is great. Did that. Do I still use synthetic oil? Yes, I do, but not in engines. I use 0W-30 synthetic oil to make rusted bolts easier to remove. It works better than anything I have tried. Synthetic oil may have improved since 2000. I am too old to risk it.

Answer 4

I have a close friend with a 1986 300zx N/A He started using mobil 1 when he bought the car with 120,000 miles on it and right now its at around 320,000 and it still runs like a champ. Personally I recommend high quality synthetics to anyone. Just dont switch back and forth engines dont really like that.

Answer 5

It isn't usually a good idea to swith the type of oil in your automobile.If you do choose to change the type of oil you are using you should keep using it on a full time basis.If not it could damage your motor.Especially on a car with high mileage.Yes,synthetic motor oil is better for your car.It is desiged to handle the motor better at higher temperatures & it will not break down as fast.

Answer 6

i don't see why not. Use same 30w10 but synthetic

Is a big mistake ,the old fashion mechanics does.Believe that using a thicker oil will protect better the engine.
Not today, buddy,Nissan's cars has minimal tolerances and accurate calibrations.
also use the oil to cool the oil galleries at some level of oil pressure and speed of the oil through the gallery.

synthetic oil is the most suitable.

Answer 7

Yes, unless the car's manual suggests otherwise. My '90 integra's manual specifically mentions not to use synthetic oil - unfortunately I have never been able to find out why.

Synthetic oil is less likely to break down. However, your you should still change oil and filters regularly, except that now you can extend the intervals to say, twice that recommended in the manual.

Answer 8

SYNTHETIC OIL is far superior to crude refined oil. In Vegas, I would go the expense for the superior qualities, without doubt. You can also go about 5000 miles between oil changes.

Just be sure to get the correct weight, (i.e. 5w/20w etc.)

Simply drain your engine completely, change the filter, and you are set.

Answer 9

synthetics can be helpful especially on higher mileage vehicles, but if you have not used them to this point and your car is properly maintained then you could stick with has been working for you. Remember that even if your synthetic may allow you more mileage between oil changes.. your filter still needs changed.

Answer 10

sure -- go for it. A co-worker with a Chevy S-10 had 220K miles on his engine. He only uses Mobile 1 oil. Every 3K miles he changes the oil filter and adds a quart of oil. He changes the oil totally every 25K miles. The engine ran like new and sounded great.

Answer 11

If you live in a cold winter place, synthetic, and synthetic blends are good choices, assuming your car is in good running condition, good compressions, does not use oil, etc. Maintain the same oil change intervals.