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Re: Does full synthetic make your car run better ? [Re: Merkava_4] #5268103 11/15/19 12:01 PM
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Only thing i've tried regular oil and synthetic is our 7.3L diesel van. the 5w40 starts and runs vastly better than 15w40 in anything other than the hot summer months. All my other stuff i don't even consider a non synthetic.


2018 Regal TourX, 2016 Golf Wagon 5MT, 2016 GMC 1500 SLT 6.2
Re: Does full synthetic make your car run better ? [Re: Merkava_4] #5268140 11/15/19 12:44 PM
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N Heat Offline
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Ive never been much if a synthetic guy. Ive tried several over the years but just went back to dino for whatever reason. Mobil 1 in my Suburban made the piston slap sound much worse.

Ive kinda changed my mind. Ive got a 2012 4runner that calls for 10k oci on syn. That is the first vehicle ive consistently used it in. Im gonna switch my CRV over to ST full syn next oil change. The prices between dino and syn are so close now, to me its a no brainer.

Re: Does full synthetic make your car run better ? [Re: Merkava_4] #5268371 11/15/19 04:31 PM
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No difference, but I am able to run extreme OCI's with synthetic (ie: 60k+ miles). Which I don't think would be a possibility with dino.

GM 3.1L LH0 V6 engine.


Change your thinking...not your oil!
Turn your mind....not your rotors!
Re: Does full synthetic make your car run better ? [Re: DirtyMoe21] #5268886 11/16/19 07:44 AM
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Originally Posted by DirtyMoe21
Better starting in cold weather is all ive noticed.

Me, too.

Re: Does full synthetic make your car run better ? [Re: Merkava_4] #5269343 11/16/19 05:05 PM
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Synthetic oils are more resistant to shearing under pressure and high temperatures while still remaining in grade with very cold startup temps. Will it make a difference on a GM3800 being driven to the supermarket and Sunday services in a temperate climate? No not really. Will it make a difference in a F20C or VQ37 or LS1/2 being driven hard on long mountain roads without adding any oil coolers? (CoolAid Man voice) Oh Yeah. Beyond that synthetics can reduce down time and "BS". A 5-6k OCI's with Mobil1 EP or Valvoline M.E. or PUP or (insert your favorite synthetic engine oil here) and a good filter means you will never be dealing with valve train clatter, sludge, clogged OC rings or carbon issues.

Re: Does full synthetic make your car run better ? [Re: Merkava_4] #5270395 11/17/19 11:11 PM
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After switching to full synthetic oil (from conventional), I noticed the following:

1) Easier cranking in the winter
2) Engine was quieter
3) During the winter, the engine oil feels much less viscous immediately after moving off.


Last edited by JimBobSeeker; 11/17/19 11:17 PM.
Re: Does full synthetic make your car run better ? [Re: pitzel] #5270446 11/18/19 03:02 AM
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talest Offline
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Originally Posted by pitzel
No difference, but I am able to run extreme OCI's with synthetic (ie: 60k+ miles). Which I don't think would be a possibility with dino.

GM 3.1L LH0 V6 engine.


You run 60k OCIs?

Re: Does full synthetic make your car run better ? [Re: Merkava_4] #5270918 11/18/19 02:51 PM
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Name brand synthetic is roughly 67% more expensive, so it would make sense that you'd get around 67% more power.

Right?

Re: Does full synthetic make your car run better ? [Re: tig1] #5271032 11/18/19 04:59 PM
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Originally Posted by tig1
Originally Posted by FetchFar
Originally Posted by Merkava_4
. Why? What am I missing? .... Does full synthetic really make that much of a difference in the way the engine runs? ...


Synthetics produce less ring deposits, well known for that.


Very true. Many engines that begin to use oil have ring coking. I have seen rings completly seal off with carbon deposits. Synthetic oil will greatly reduce this even with much longer OCIs than dino. Any time you see varnish, which is caused by oil oxidation, coking may become a problem.

For a sound engine, synthetic oils like M1 or PP will give several advantages over dino.

Proof?


Tiger862
2018 Grand Caravan
Re: Does full synthetic make your car run better ? [Re: talest] #5272275 11/20/19 02:38 AM
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Originally Posted by talest
Originally Posted by pitzel
No difference, but I am able to run extreme OCI's with synthetic (ie: 60k+ miles). Which I don't think would be a possibility with dino.

GM 3.1L LH0 V6 engine.


You run 60k OCIs?


Yuppers... Haven't changed oil since George W was in office on that vehicle.. I made a thread with some pics of the oil pan and valve covers removed at various times.


Change your thinking...not your oil!
Turn your mind....not your rotors!
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