im new help me!!!!! 60,000 miles too late to switch too synthetic???

[04g35cpe]

Im new to the forum i just got my g a month ago and just turned 60,000 mile service. i called the factory to see how much it is and they said like $400 for oil change, air filter change, and coolant change. i work on alot of cars and figure i can do it myself but i do have one question i have no idea if the prior owner used synthetic or regular or synthetic blend is it too late to switch over cuz i plan on using sythentic when i change it? just wonderin in case it has been using conventional oil will it hurt anything??? ive searched around the forum alot and saw some people say it creates leaks is this true should i just put in a synthetic blend or go full synthetic??? thnx for the help sry to be a noob

[Tampa G35 Sedan 6MT]

I don't think it is going to change anything!

I use Mobil 1 Extended performance in all my cars!

It is best to use the synthetic because you could have problems if the previous owner used it and now to go back to dino oil might bring you some problems!

Welcome to Nico and The guys will be around soon to offer some other answers

[SVTCOBRA]

Welcome to Nico!

I grew up in G'boro! Went to Smith.

Changing now to FULLY syn is fine!!!

Also, doing the work yourself is good too!

Send me some Stamey's!

[kmckis1029]

i just switched to full synthetic with 22456 miles when i had my car serviced this weekend...

man on man the car revs even better! i can never go back to regular oil!

pennzoil full synthetic

[04g35cpe]

sure just gimme ur order i will ups it to ya lol!!! So what kind of oil do u suggest Castrol Edge, Royal purple, Mobil 1??? this is given me a headache does it really matter what does everybody else use???

[Tampa G35 Sedan 6MT]

I like Mobil 1 EP because you don't have to change the oil until you reach 1 year or 15k miles.... I love that! and it really does stay clean because of the Mobil 1 EP filter!

DJ

[kmckis1029]

i'll try mobile 1 next oil change... but wow 15k? i would still change it 3000 miles or so...

[04g35cpe]

yea i would have to agree with u there. so i guess mostly everbody here uses mobil 1 and likes it??? anybody suggest somthing different if not im goin mobil 1

[04g35cpe]

I also have another fluid related question is there a special types of coolant that i should put in like motul optimal expert or will regualr 50/50 prestone do the job???

[Jacko3]

Preston 50/50 works just fine.

[marlin29311]

I also have another fluid related question is there a special types of coolant that i should put in like motul optimal expert or will regualr 50/50 prestone do the job???

Yea, if you are living in NC 50/50 is just fine, no need for anything special.

[04g35cpe]

ok thanx for all the help I really appreciate it!!! but back to the oil dilemna im having I have been searching all day on the net lokkin at differnet synthetic oils and its killin me! anybody runnin motul 8100 or royal purple?? are they worth the extra money or should I stick to mobil 1 or castrol synthetic?? anybody runnin castrol edge?? please help any suggestion will be appreciated

[Sentientbydesign]

Welcome to NICO.

Let's do some clarification.

Changine to synthetic now is completely fine EXCEPT, if you have any existing oil leaks. Those should be fixed prior to changing. I changed to synthetic on my I30 at 250k miles with no problems. That stuff came out black at 2k. I think my engine was dirty?!?!

As for what type of oil. This topic is SUPER controvertial. I just bought 5 qts of Amsoil 75w90 for my transmission and differential. It's a class 4 (?) synthetic. The company's marketing direction has always been fuel economy and reduced wear characteristics. Both of those are more important to me than 2-3 hp.

They also claim extremely long change intervals. I would NOT do this with Mobil 1. There has been talk about their formula having degraded from a class 4 down to a class 3 which I THINK means it it no longer 100% synthetic. I'll have to do more research.

My worry about Mobil 1 is that it will shear to a low viscosity with our high performance engines.

Running it for 5-6k wouldn't phase me. 15k on mobil 1...*crickets*

Motul is supposed to be a class 5 ester based synthetic. Sounds like a good oil, but I haven't used it.

Royal purple is great for racing applications, but I wouldn't try the extended drain intervals with their oil. Amsoil did a test and showed that the molybedenum (form of carbon) could fall out of isolation with extended use.

They really didn't say that RP was bad, just that it didn't have the lifespan of their oil. I've seen 1 or 2 magazine articles showing dyno results before and after RP. I think one showed as much as 7 hp.

Watch out with the Castrol. They have an American syntec and a German Syntec. The German one (says so on the back of the bottle) is supposedly much better. Not sure why.

[joe603]

I've been hooked on Royal Purple for years now. All of my cars love it! I would agree with SBD in that do the switch only if you don't have any leaks (which you probably don't, it is an Infiniti).

[04g35cpe]

ok thanx really helpful stuff!!! i been goin back and forth all day between RP and Motul but it seems as if nobody has used it.. this shouldnt be that hard its just oil but where can i purchase amsoil??? Is THIS what ur running???

[Sentientbydesign]

Motul is available at my local dealer. I think they use a synthetic blend for normal oil changes (other than the G37 which is now an ester based synthic per SteveTheTech) and they offer mobil 1 and Motul.

Amsoil has a weird distribution method. It's NOT MLM, but they also don't sell their stuff in the chain stores (that I know of) either. You can go on their website to find a dealer near you. It's usually an individual in your city/area.

If you like it enough, you can become a preferred customer or something like that and get "wholesale" prices for a $20 membership fee annually. Great if the whole family wants Amsoil. Not worth it if you don't at least spend $100/yr.

I happened to buy the Amsoil at Super Autobac's here in SoCal. I've been describing the place as "Toys-R-Us for car freaks". They sold Amsoil, Royal Purple, Motul, Lucas, Mobil 1, and a couple other well known brands in addition to the plethora of other car stuff they had.

I just got a new engine because of faulty piston rings on the last engine. So right now, I've been getting dealership oil changes. That will change shortly.

[Jacko3]

Nate:

I think I will use Royal Purple in my next oil change in a few weeks to see how it really works. I will report back on the effect on my car.

[04g35cpe]

ok once again thanx alot of my questions have been answered and i did a little research of my own!!! I think im gonna go with motul 5w 30 eco-nergy that has more emphasize on wear and fuel economy and i will report back on how the car reacts. i do have a one more question my back brake are needing to be replaced should i go with oem pads, nismo r tune or hawk and how do i know if my rotors need to be turned and my car is equipped with brembo so i dont wanna run too much longer with these bad brakes

[Sentientbydesign]

That one is a little out of my knowledge range. I haven't had any experience with the brembos to tell you which way to go.

I have personally used the hawk pads and I like them more than OEM, but in your case, you might have had all brembo parts to begin with.

[awdjdmtalon]

One more thing. You WILL NEED TO SHORT CHANGE your oil after switching to synthetic. After about 1k miles you will need to change theoil and filter. Due to the better detergents and cleaning agents in the synthetic. After that, change as normal. If you do plan on running extened change intervals, you will need to change the filter at the regular intervals.

[BrandAidDesignG35]

Quoted by Sentientbydesign "Running it for 5-6k wouldn't phase me. 15k on mobil 1...*crickets*"



I use mobil 1 5 w 30, changed with a Fram filter every 5,000 KM... I top it up around 3,000 with another quart.

[Sentientbydesign]

If you do plan on running extened change intervals, you will need to change the filter at the regular intervals.

How do you do this?

The only solution I've seen is a multi filter system.

[kmckis1029]

i just switched to pennzoil full synthetic... i should change it again after 1k or so? even with only 22456 miles on my car?

[cybertec69]

i'll try mobile 1 next oil change... but wow 15k? i would still change it 3000 miles or so...

if you plan on changing the oil every 3000 miles, I suggest you stick with a good regular oil.

[awdjdmtalon]

How do you do this?

The only solution I've seen is a multi filter system.

Just at the normal oil change interval, remove the used filter and put on a new one. Then top up the oil that was lost during the filter change.