syn vs dino noise

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ok,I`ll chime in.I think a lot depends on your motor,viscocity your using etc.I am using MB-1 0W-30 in my RX 300,and that motor has never been quieter.That stupid 1MZ-FE actually makes more noise on Conventional oil.(at least mine is sludge free.)
 
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Maybe. There are a lot of this oil makes noise, this one doesn't threads around here, but I have yet to see a correlation to syn vs conv.

Really, I'm surprised there are so many noisy engines. Some I think might be the injectors, which are very loud in one of my vehicles and really loud on the GM DI and some other high pressure DI setups.
 
Thicker oil can quiet an engine somewhat - dino or synth.

Mobil 1 seems to have the most reports of more engine noise - who knows why?
 
Originally Posted By: mechtech2
Thicker oil can quiet an engine somewhat - dino or synth.

Mobil 1 seems to have the most reports of more engine noise - who knows why?


That figures,mine is vica-versa of that claim.
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I dont believe I have a normal RX,mine also does not like Amsoil synthetic transmission fluid?? How can it not like Amsoil trans fluid???
 
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For 31 years I've had very quite engines on M1 oils, with the exception of two Ford diesel engines I had in the 80s. A friend with a 300 ci Ford truck, on dino, always had noisey lifters. After switching to M1 10-30 his engine quited right down. Also the machine shop where I worked for many years had most of the employees using M1 oils, my doins, in a variety of engines. All said their engines were quiet on M1 oils. Some ran well into the 200,000 mile + range.
 
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Every car I`ve ever owned had run more quiet and responsive on dino. Plus every UOA I`ve seen here and on other sites always have way more wear metals on synth vs dino. I`ll never use synth in an engine anymore.

BUT,manual trannies and rear diffs run much better on synths over dinos. That`s where imo synthetics belong,in trannies and rear diffs.
 
Originally Posted By: aquariuscsm
Every car I`ve ever owned had run more quiet and responsive on dino. Plus every UOA I`ve seen here and on other sites always have way more wear metals on synth vs dino. I`ll never use synth in an engine anymore.

BUT,manual trannies and rear diffs run much better on synths over dinos. That`s where imo synthetics belong,in trannies and rear diffs.


The qiuet part maybe,but more responsive??
 
My Mazda3 clatter quieted down this past weekend after I switched out the Purolator Pure One filter to an OEM filter.

Kept the same oil in there. The engine now purs from a cold start after a night's sleep outdoors.

Very surprised that the highly regarded PO filter was the cause.
I had thought it was oil formulation (switched from PP to QSHP back to PP).
 
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Originally Posted By: tripleM
My Mazda3 clatter quieted down this past weekend after I switched out the Purolator Pure One filter to an OEM filter.

Kept the same oil in there. The engine now purs from a cold start after a night's sleep outdoors.

Very surprised that the highly regarded PO filter was the cause.
I had thought it was oil formulation (switched from PP to QSHP back to PP).


Is your Mazda 2.3 oe 2.0?

My Mazda3 (2.0) is totally opposite. It's pretty quiet no matter what filter or oil I use. I used OEM filters, Pure Ones and Motorcraft, all are the same. Same when I switched from MC 5w-20 to Syntec 5w-20, and then from Syntec to PP, the startup noise is always the same.
 
Originally Posted By: lexus114
The qiuet part maybe,but more responsive??


Absolutely. I tried a couple different synths in my gf`s Olds 88 and it was the same way. You`d think it would be the exact opposite,but it wasn`t. My 3000GT also was happier on dino. Maybe that`s why so many people dismiss the Timken test,because it applies to gear applications and not engines. I have a jug of M1 that was going to be my next oci,but I think I`ll stick with Valvoline wb dino.
 
Some engines are just louder than others. My Focus and Sequoia pur like a kitten on Mobil 1, however my Dodge Conversion van at 157k was loud on synthetics. It is very quiet on Pennzoil Yellow bottle.
 
My car got louder on Mobil One got quieter on Amsoil ACD (higher viscosity), and it's hard to tell but I think it's a little quieter on the Redline. I remember clearly that there was a big difference from the FF and the first dino oil change to the Mobil One in noise which was surprising to me. This was before I was a BITOG member and had ever heard of noise associated with Mobil One. It's also possible the car was filled with a 10w-30 bulk oil on it's first change and the lighter Mobil One made more noise due to the viscosity.
 
Originally Posted By: KrisZ
Originally Posted By: tripleM
My Mazda3 clatter quieted down this past weekend after I switched out the Purolator Pure One filter to an OEM filter.

Kept the same oil in there. The engine now purs from a cold start after a night's sleep outdoors.

Very surprised that the highly regarded PO filter was the cause.
I had thought it was oil formulation (switched from PP to QSHP back to PP).


Is your Mazda 2.3 oe 2.0?

My Mazda3 (2.0) is totally opposite. It's pretty quiet no matter what filter or oil I use. I used OEM filters, Pure Ones and Motorcraft, all are the same. Same when I switched from MC 5w-20 to Syntec 5w-20, and then from Syntec to PP, the startup noise is always the same.


2.3.
It was fine until 2 OC ago (~14k miles or since last fall) when I switched to PO filters.
First I thought it was cold weather or sitting in the open @ night - since the car had been garaged all its life.

But I looked over my log & noticed the only thing besides the environment change was the filter. & the garage thing was easy to test.

Not sure why PO filters would cause valve clatter that would last well into operating temps or even after sitting on outside asphalt on 100+ days...
 
What kind of noise? slap or tappet? My car's TC tensioner and TC is quieter on syn. The piston noise was louder - so I dumped some oil and padded it up with 10-40 and it quieted right down. Prob Vii in the 10 40 vs almost none in the 30. Adds traction and oil wedge under the tappets; also add deposits
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I think a lot of the syns are .5 -1 cst thinner so you have to take that into account too. Dead quiet on Motul di-ester though - you know the di-ester "velco(tm)" polarity effect.
 
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