Synthetic’s specialties are to withstand extreme driving and extreme temperatures since its chemical construction is less prone to solidifying in winter and has a higher boiling point in heat (~400 degF), in addition can be run in engines longer before needing to be changed.

Most dirt particles are generated from the intake air flow, a little bit from natural engine wear and internal combustion by-products. This doesn't change no matter what oil you use. If you live in a very dusty or polluted region, you will need to change your oil more often.

Using Synthetics will not hurt your engine but are not required unless you are in the "extreme" catagory. Regular oil and filter changes every 5,000 miles are all that is needed for the normal driver. If you learn towards caution, just change your intevals to 3750 miles.

 

the hell with oil change in the first 500-1000mi. if u asked older ppl who went thru a lot of vehicles in their time, i bet most of them would say you're just wasting your money and it makes no effing diff. just change it at the manufacturer's recommended interval and you're good, even if you use regular oil like i do. im at 28K, and never had to add oil between changes, not even 1/4 quart. i guess my VQ was properly broken in

 

I know some cars come with synthetic from the factory. My friend's Z4 started off with synthetic and and he's been getting synthetic from BMW when he takes it in for service. Maybe their engines are broken in before hand, but it's at least one example of a car getting synthetic early in its life. As for not going back from synthetic, I've also heard too that after you switch you shouldn't go back, but I don't have the best source (mostly heresay). But the example I was given was a high mileage car that was having issues with regular oil. Someone said they switched to synthetic which made it better, but after a while got cheap, and tried regular again which screwed things up. Honestly, I've got a feeling that the engine is pretty tough. Nissan puts this thing in well over half of it's cars (Altima, Maxima, FX, G35, etc.), and I'm sure they built it pretty rugged so some moron won't destroy it with synthetic oil too early. Most of us are probably more **** than we need to be, but it it still won't stop me from treating my baby right.

 

This engine is no different,or better than Mercedes AMG, or Porsche, or Corvette engines that come from the factory with mobil 1 synthetic. They don't test these engines for 3000 miles before they switch to synthetic. You can use synthetic whenever you want.

 

what I'm saying is based on Blackstone oil reports on Nissan VQ engines.. not covettes, not porsches or camaros or hondas..

known, based on report... at 551 miles, a tested sample showed the oil had the properties of oil with 3500 miles on it.

known, based on *countless* VQ oil reports, you will continue to show high metal until 5-8K. This is good wear and you will not reach the highest HP or MPG until this wear settles down. Synthetic will delay this wear and there's a *very* slim chance you wont break in properly. This includes the slim chance of increased oil consumption. Not worth risking if you can be patient.

Nissan has been tweaking the amount of moly, chrome on the rings, oil filtration and capacity over the last few years. Dont assume anything. Use the wealth of oil reports we've posted if you really care to educate yourself. We've spent our $20 @ report to help you guys choose oils, filters and intervals.

 

I'd love to see what you're using to form this opinion. Really, I'm not being sarcastic.. show me some data. Its contrary to the volumes of info I've read on this site/maxima.org/bobistheoilguy and tested for myself.

 

G is my third car that I use synthetic in. The other 2 went over 200,000 and engines were still in great shape (mechanics opinion). I changed to syntetic at 500 miles and at 27,000 it's in a very good shape. Experts say: never go back from synthetic to regular. Synthetic benefits: cleaner engine, valves, spark plugs etc., better winter startup and better fuel economy. The only drawback is a longer period of break-in. You will save on repairs in the long run and on gas (1-2 mpg).

 

at this point, my guess on Nissan no longer recommending synthetic is extended intervals on their newer thimble sized oil filter. Plus, with lighter ring pressure, we get alot of fuel dilution. With city driving, this is causes me to drain M1 at 3500. This really isnt the oil's fault, it still has plenty of additive.

The additive is another thing. There has been some discussion about Nissans use of Moly coated parts with high moly syn oil. Not really sure what the consesus is on that, but it was causing some concern on oil reports a few years ago. Mine have been fine.

 

I started synthetic at 10,000 miles.

 

ALL THE ENGINES ARE THE SAME!!! new parts = break in! your engine is a crank rods and pistons bolted together in a metal box. Why does porsche engine makes more power or comes with this yada yada yada.. you're spending how much on the car? the materials used to make the engines are stronger steal (Forged?) and the blocks are made of stronger light weight metal as well.

Why no syn for a few thousand miles? because you want to wear down the parts faster with regular (thicker) motor oil (break-in!) vs the thin syn oil. yeah you can pick up the car and take it home and put in syn oil if you want. To make it simple.. your sanding down a piece of rough wood.. you have 10,000 grit sand paper (your motor oil) and 5,000 (syn oil) eventually you're both gona sand the wood down to the correct specs but yeah u get the idea.

so why syn later on? Syn is a thin high temp oil made for high performance engines (engines that operate at high temps) it'll also help lube up the SMALL clearance areas in your motor.

why do some motors come with syn factory? cause the clearance is so thin that syn is demanded.

why change your oil so much? cause i redline about every other time.. if there was a black box (i think there is) in our ecu that records the amount of times you've red lined and passed 100mph i think i wouldnt be allowed to drive... but anyways your oil does NOT go bad.. shiet common oils been sitting under us for how long? its the additives we (redline, mobil1, castrol, etc..) add into the oil that'll start seperating over time.. kinda like why you guys empty out the gas tank before u store your cars in for winter. AND also your engine burns what? fuel ya? and it sucks in all the dirt and grit n crap in our air? that'll end up in your oil.. so the harder you run.. the more fuel you burn the faster your oil gets dirty (time to change). How do you tell? you cant (well obviously if u see metal in your oil you have a problem). the only real way to check oil is to get it tested.. which i doubt you guys would wana do for a $25 job. I'm just being safe and changing it at 2.5k.. some of you should be changing at 2.5k.. others 3k... **** some of u can even go 10k depending how you drive and where you live. But you shouldnt wait more then 3months to change your oil!

G3NIU5: let me ask you this.. have you ever put an engine together or even seen a engien that has been taken apart? your engine oil has to lube EVERYTHING all the bearings from cams down to crank. it also has to do its job of keeping the engine cool. MOST (i know dodge puts this green chemical) if not all manufactures will add additives into your oil to help you break in. and when you break in.. i dont care if your engine has already broken into by factory.. the main purpose of even running it in factory is probably just to make sure the thing works. Anyways you're wearing down your parts and you end up with TINY TINY metal flakes in your oil. now when you have that in your lube for an engine thats measured with mics and feelers... yeah think. sure you can keep driving it.. we'll compair engine life down the line (assuming you keep your motor that long).

a 17 year old is ranting about a $25 job to guys that own $40,000 cars.. lol

"AHH $25?"
1. Oil filter is $5 at Nissan (I'd recommend you buy the one for a 99 Maxima)
2. Mobil1 FULL-Syn Oil is $20 at Walmart
3. It takes 15-20 min to do an oil change
4. Keep a Log.. just a notepad file.. i'm sure you guys making $60k a year can type.. kinda like this

"09-29-05 Oil Change at 4,356miles"

and keep your reciept for filter and oil if you want (which also has a date) in a box.

Yet you guys will pay like $45 to get it done at the dealer while waiting 30min-2hours? or take it to jiffy-lube and have some one my age work on your car with crap oil? you wonder why its only $25.. u needa get your shiet straight when you run a $9 mobil 1 filter with $5 oil

 

Engines are pre-broken in from the factory. It's the transmission fluid that should be changed. All this talk about breaking in the engine.... it's not needed. What you're actually breaking in is the tranny.

Nissan hooks up the engines and runs them for X amount of hours before they go into the cars. This is straight from the shop foreman at my dealership. I trust what he says.

 

dont forget the diff

 

youre still just posting what you think. I'm using Oil Analysis... which they compare against thousands of other samples sent in from VQ35 engines.

Day177017 No, Nissan engines still break in much more than other manufacturers.

You guys are comparing apples to oranges.

Believe whatever you want. But if you actually looked at the VQ reports, I doubt there's any way you could keep believing that.

 

Infiniti dealers do not want you to use synthetic because you won't have to come back as often with synthetic oil. Less visits to the dealership means less business for them. That is why!

 

TimW i'm telling you how its done on every engine porsche, vette, geo metro, hondas, g35s, etc.. everything with new internals (includes tranny and diff as well). As for what type of factory oil (syn or not) depends on how the engineers designed the oil clearance for that block and head.

Dealers use whatevers manufacture specs not for you to come back.