[Herb]

I switched to Valvoline MaxLife Convention 5W30 at 150K. Eh, so so, didn't notice much of a difference, engine was buttery smooth for the first 500-750 miles and then was the same as whatever crap the dealer was putting in.

Switched to Valvoline MaxLife Full Synthetic at 170K. Amazing difference on cold starts. Before, with conventional, starting the car in the cold, the first ten minutes were rough. With the synthetic, small difference between how the car drove warm and cold. Very impressive.

Switched to Mobil One at 176K. Car does not smoke at all anymore, as it did with the Valvoline. Very smooth, very nice. Also just $19.99 for 5 quarts here at WalMart, so why not...

Burning about 1 qt. every 3K, whether conventional or synthetic.

Summary: Noticed no difference other than a very significant difference in cold starting which made it very much worth it for me. Recommend Mobil One from Walmart, 5 qt. value package. You save $10+. Costs me $5 more every 3-4k than conventional.

 

[91boz]

Running Moble 5-30 at 12k intervals. Filter replaced at 3k. I could not detect any change from using regular oil. Just the peace of mind that the synthetic oil is not breaking down as fast.

 

[PrimeTimeTSA]

Whats the advantage of an NSX filter??

 

[Herb]

Whats the advantage of an NSX filter??

Its bigger

 

[carrera79]

I've been a member of bobistheoilguy.com for three or four years. There's a lot of arguments on there about oil life and filter life. I will say this, my grandmother's new Porsche Cayenne (pretty sweet for an 81 year old lady) has 20k mi service intervals.

 

[RYS]

my engine has 200k+ is it safe to switch to mobile 1? I beat the hell out of my car foot to the floor revving to the limit all the time I'd like some protection against that.

Got a FRAM part number for the NSX filter?

 

[carrera79]

I doubt you'll have any problems. I switched my legend over at 100k, and it's not having any problems at 140k now. I also run my '92 Saab with over 150k on mobil 1. 0W-40 in both cars in the winter 15W-50 in the Saab in the summer. The legend burns some oil, the Saab burns none, not a drop. I would look into auto-rx. It cleaned a ton of stuff out of the Legend before I switched to syn, and it really helped out the PS in my Saab. www.auto-rx.com

 

[BigRed]

I switched to M1 at about 180K in my pickup...no change or oil leakage. I'll be switching to synth at my next change in the Legend (171K) and I won't even worry a little bit about it...

 

[Big Flick]

Once you start using synthetic oil in any motor you cannot go back. If you go back to regular it will f*** the whole engine up. So make sure going to synthetic is really what you want to do and if you do do you really want to spend the extra money.

 

[Stu]

Once you start using synthetic oil in any motor you cannot go back. If you go back to regular it will f*** the whole engine up. So make sure going to synthetic is really what you want to do and if you do do you really want to spend the extra money.

REALLY ?

I have never heard that before ! And I cant imagine why this could possibly be true. Could you explain this please before I call BS, lol

 

[antik]

Stu: Are you being serious? I'd heard that the switch to synthetic is one way also...

Haven't bothered to read up and verify though...

 

[carrera79]

REALLY ?

I have never heard that before ! And I cant imagine why this could possibly be true. Could you explain this please before I call BS, lol

I'll call BS for you. The only problem that you might find is some seepage due to the cleaning of seals that were sludged up. I haven't noticed any additional oil use in either of my vehicles. Also, with substantially less need for vicosity modifying additives, syn is much more stable. The polymers used to create multi-weight oils shear down over time, so less is better.

 

[Stu]

Stu: Are you being serious? I'd heard that the switch to synthetic is one way also... Haven't bothered to read up and verify though...

Yes I am serious ! I am running on synthetic now (Royal Purple) and am planning to go back to regular oil AND I never even thought that it would cause any problems. I did quite a bit of reading BEFORE I switched to synthetic and I never read anything about this being a one way switch.

 

[Herb]

Once you start using synthetic oil in any motor you cannot go back. If you go back to regular it will f*** the whole engine up. So make sure going to synthetic is really what you want to do and if you do do you really want to spend the extra money.

That's the equivalant of an old wives tale and is untrue. Research before you post up false statements.

 

[Stu]

Big Flick, You've been here for a whole 3 days, but please don't post any absurd mis-information here ... there are too many guys here that know better, so perhaps you might want to do a bit more reading here before you post any more.

When you do post, think quality, not quantity !

 

[carrera79]

Oil has got to be one of the biggest argument starters that I've ever seen in dealing with cars. spent some time on bobistheoilguy.com and you'll see what I mean.

People get as worked up over syn oil as they get over genetically engineered food. It's like they think it's some scientific experiement ready to go horribly wrong. All of the high end manufacturers use synthetic oil in their vehicles. The sludge issues experienced by both Toyota and VW's 1.8t motors were both non-issues for people using synthetic oils.

 

[Big Flick]

I do not exactly know why you cannot go back but I know that my friends told me because their dad is a manager of an acura dealership and he said that if you do that you cant go back so I am just believing him. I dont know if it is 100% true but I can kinda believe that putting synthetic in a motor and then going back to regular could harm the engine.

 

[Stu]

I dont know if it is 100% true but I can kinda believe that putting synthetic in a motor and then going back to regular could harm the engine.

Well it's NOT true at all, switching back and forth between synthetic and regular oil will not cause any problems.

Just because someone works at an Acura dealership does NOT make them expert on everything .... hell, many of them don't even know very much about the cars they are selling !

 

[carrera79]

Big Flick, I'm not trying to get on your case, but what could there possibly be about the magical formulation of synthetic oil that could cause problems to occur? it's all oil, syn is essentially more stable and consistant over a wide temperature range, and it can handle acids a bit better. Logic applied to most car myths clarifies the stupidity quite quickly.

 

[Big Flick]

That is all that I was told. So dont get pissed at me because I said something that might not be true. I didnt know if it was true or not when he said it but it sounded kind Logical at the time. He is the manager of an acura dealership and has been in the car buisness since high school. He is preaty much absessed with cars which is really cool. That is all that he told me so I just believed what he said. SORRY!!