All you have to do is some reading on the subject. It is well proven that synth oil has a much higher shear strength, cleans and suspends dirt better, flows better at lower and higher temps, does not leave residue on engine components, etc..
Synth oil offers more protection than is usually required for the street... but over time, it will keep your engine cleaner internally, better protected... and that is cheaper in the long run.

 

+1

I think the general consensus is that for cars like the G35, the main advantage of synthetic oil is to extend the oil change interval, plus better performance under extreme temps. I change my oil evert 3750miles with dino oil and live in Socal (moderate temps). This gives me better peace of mind as opposed to going synthetic and extending the intervals to 7.5K miles.

 

All you have to do is some MORE reading on the subject. Cite me any proof that synthetic oil is better on normal cars. I'm well versed in the topic and know what synthetic can and can't do.

 

i never asked which is better, i asked when is a right time to make the switch. like i said before, ive seen what synth oil has done to a turbo'd engine, i have no doubt it would do the same and even better for n/a engine.

 

It all depends on how you want to maintain your car and how long you keep it.
Do more than read. Look inside an engine that has used synth all its life with 60+K miles on the meter. It will look like new and the oil galleys will not have any buildup. Do the same with mineral oil used and see the difference. I have and its quite obvious. You can't argue that synth oils will lubricate better and lower temps by reducing friction, which is a good thing. Newer engines have tighter tolerances than ever.. this also challenges the oil in its ability to still lubricate and not shear under extreme conditions.
Newer mineral oils have improved but mostly with additives, and don't compare to synth oil specs.

So how can it hurt by using it in your car? It's better protection for a small amount of money.

So what are you saving.. $7 - $10 maybe an oil change? I get Mobil 1 for about $4.75 Qt Conventional oil is $3.25 or so.
You bought a $36K car.. Anything worth doing is worth over-doing.

 

You're stretching, that's why i don't bother arguing with you for more than 2 sentences. If you're doing hte oil changes by yourself, I would recommend getting using synth oil and getting your oil tested. Anyone who pays for oil changes knows synth will often cost 2X the price.

I have only seen comparisons between well maintained engines with snyth oil and engines not well maintained with dino oil...never a fair comparison.

 

I believe FI is different. The G35 doesn't even have that high of a compression ratio.

 

Forced Induction engines use a lower CR than a NA engine. To keep them from detonating while under boost.
Synth oil helps keep the oil lines that feed the turbo bearings from coking and blocking the tubes. Wise to use with turbos

 

You will see residue from mineral oil on a well maintained car also. I like they way you make assumptions... hope this isnt too long for you.

 

I have made NO assumptions. I stated that in previous comparisons I have seen it is maintained with synth vs non maintainted with dino. You have yet again provided ZERO proof and just keep spewing out your beliefs. My original post said that I have HEARD of the supposed benefits from Synth oil and I understand the concept, but real world wise I have seen NO PROOF of this being true. You have still not provided any proof and continue to spew the same propaganda that garages do when they want to sell you something that costs more. I KNOW synth is better in theory, I have just never seen any practical application of this and would LOVE for you to PROVIDE some PROOF, instead of RUNNING your mouth.



I KNOW. I said Synth is GOOD for FI. I was saying if ther G35 were a super high compression ratio engine like the E46M3's or a Type R honda engine, then I would probably use synth oil. Again, you have contributed nothing.

 

Of course you have.

Too many sentences and you wouldn't understand anyways. I never argue with an idiot. They only drag you down and beat you with experience.

Of course.. so a 11.5:1 vs 10.6:1 CR is enough to make you use synth oil. Wow... so you dont see it's value for the VQ35HR which winds out to 7600 rpms.. You are a mechanical genius. Oh.. sorry .. too many sentences for you

 

That's right, do what you do best. Contradict with out evidence.

 

BTW, I'm a man who has been trying to find reasons to go and stay synthetic for 3 years now. My experience and research has provided absolutely no evidence for using Synth oil.

I apologize if I insulted you, I would LOVE for you to convince me to use synth oil via evidence as opposed to theories and assumptions.

 

Evidence already exists.. you just need to read and more importantly comprehend.

 

I took my sisters Honda off her hands. I needed a beater car for the bad weather city trips. she had an 92 Accord. Oil changed every 3K miles with dino oil. At 120K miles I adjusted the valves as they were getting to loud.
The inside of the engine was stained and covered with dark brown stains and some buildup at some of the hotter points above the combustion chambers. Some of the oil passages had a hard buildup from the oil. There was no sludge as it was clean from the many changes.
My 99 vette had a broken valve spring at 87K miles. It came from the factory with M1. I changed out all the springs and put in new retainers. The engine was like new. Shiny silver. Just like off the factory floor. Not a trace of stain or buildup. Of course I dropped a valve trying to take a short cut and eneded up pulling the head... but it was like new inside. I put synth in everything now I intend to keep.