Author Topic: Synthetic Oil  (Read 3802 times)

Kalgorn

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Synthetic Oil
« on: January 12, 2012, 08:26:04 AM »
What's the deal nowadays? Best mainstream brand? Or does it even matter at this point?

I picked up Mobil 1 for the first change because that's what I always used in the Camaro, but last I heard, it's not a Group V anymore so it's not worth the money?

I was going to go with Supertech synthetic but they don't carry 5W20.

2002 Silverado | 1995 Talon TSi AWD | 1989 Prelude Si 4WS

87Warrior

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Re: Synthetic Oil
« Reply #1 on: January 12, 2012, 08:54:03 AM »
You really can't judge oil by the brand. Research the oil specifications for your car then start flipping over the bottles at the store and buy what fits your car's needs.

Example, the Jeep 4.0 really needs an oil with the ACEA A1/A5 or A3 rating to protect the flat tappet camshaft. I usually run Mobile 1 high mileage because it usually meets the specification. However, on occasion it will not have the specification on the bottle so I find something else that does.

Point being, don't become a brand fan boy and make sure your oil is protecting what it needs to for your car.

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UberWasser

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Re: Synthetic Oil
« Reply #2 on: January 12, 2012, 11:17:03 AM »
Seconded. I used to use exclusively Mobile 1 European car 0w40 as the Bimmer guys rave about it but after some research found that Rotella T full syn is just as good and costs dramatically less (they actually sell it in 5 gallon buckets an my local O'Reillys for $75 which works out to $3.75/quart!). It's what I will also use on the Benz at the next change.
« Last Edit: January 12, 2012, 11:19:45 AM by UberWasser »

[ChaosweaveR]

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Re: Synthetic Oil
« Reply #3 on: January 12, 2012, 01:14:50 PM »
I've used Castrol Edge and Pennzoil Platnium, both better than Mobil 1 IMO.

If you REALLY want the best you can buy, Amsoil hands down. But it's pricey.
-Chris-

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Kalgorn

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Re: Synthetic Oil
« Reply #4 on: January 12, 2012, 02:12:03 PM »
I don't mind spending some money on oil. If I go with even better oil, I can probably go 10k on a change with just changing the filter at 5k. I've read a little bit on the LVC forums and a handful of people say they go 7.5k-10k miles no problem with a filter change between.

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Southern_Pride

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Re: Synthetic Oil
« Reply #5 on: January 12, 2012, 06:56:23 PM »
Rotella. I run a 300k mile to 7k rpm on it almost every weekend. No issues yet.

[ChaosweaveR]

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Re: Synthetic Oil
« Reply #6 on: January 12, 2012, 09:52:33 PM »
Rotella. I run a 300k mile to 7k rpm on it almost every weekend. No issues yet.

lolno
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Southern_Pride

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Re: Synthetic Oil
« Reply #7 on: January 13, 2012, 08:46:23 PM »
I'm just sayin. I believe in the shit. The engine is only balanced for 5500.

[ChaosweaveR]

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Re: Synthetic Oil
« Reply #8 on: January 13, 2012, 08:55:29 PM »
Oil designed for diesel engines in a gasoline motor? NOPE
-Chris-

2005 Honda Accord EX-L Coupe

GMCBrewski

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Re: Synthetic Oil
« Reply #9 on: January 13, 2012, 10:42:09 PM »
Read the label. Rotella T has really good gas engine qualifications, especially for the price. It used to have proper ZDDP levels as well, but that's been cut.

UberWasser

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Re: Synthetic Oil
« Reply #10 on: January 13, 2012, 11:44:11 PM »
Oil designed for diesel engines in a gasoline motor? NOPE

I was a bit hesitant too, at first. But it works slick as shit in the 540i. :dunno:

When it comes to buying oil it's all about understanding the specs it meets. No one oil is "best" for all cars.

Gauss

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Re: Synthetic Oil
« Reply #11 on: January 14, 2012, 12:36:45 AM »
Oil designed for diesel engines in a gasoline motor? NOPE

Shouldn't the viscosity be all that really matters?

87Warrior

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Re: Re: Synthetic Oil
« Reply #12 on: January 14, 2012, 01:40:35 AM »
Shouldn't the viscosity be all that really matters?
Absolutely not. Every manufacture spells out what minimum specifications an oil must meet to use in their vehicle. This information can usually be found on the oil fill cap. However, further research on the motor's protection needs and changes in oil formulation by enthusiasts will narrow down what type of oil should be used.

In the early 2000s levels of ZDDP (zinc, an anti wear agent) in gasoline motor oils dropped dramatically. This was done to protect catalytic converters as zinc degrades them. Diesel oils continued to use those high levels.of zinc. In the late 2000s zinc levels in diesel oils dropped as well. While the reduction of zinc levels does not cause a stink in most motors because of the newer anti wear agents in the oil, some older motor designs still using a flat tappet camshaft are left without the necessary protection. Because of this, it is necessary to find the few oils still being produced that will provide the protection needed for your particular motor/car.

FoMoGo

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Re: Synthetic Oil
« Reply #13 on: January 14, 2012, 08:42:24 PM »
Oil designed for diesel engines in a gasoline motor? NOPE
I have used diesel engine oil in my gas engines since the late 80s.
Do some research before spilling out ignorance.


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James

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Re: Synthetic Oil
« Reply #14 on: January 14, 2012, 09:01:20 PM »
Oil designed for diesel engines in a gasoline motor? NOPE


Go here.

http://www.bobistheoilguy.com/forums/ubbthreads.php


Lurk for about a month.  Then post in this thread when you are a little better educated.   In fact, go pick up a bottle of Delo 400 or Delvac 1300 and read the label and see that it specifies both gas and diesel engines.  Also, you can't even approach qualifying statements about Mobil 1 against PP or Castrol as to which is better.  Plus there are small niche oil brands that shit all over AMSoil for specific applications so how can it be hands down the best?
« Last Edit: January 14, 2012, 09:04:49 PM by James »
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