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"Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" #5192968 08/21/19 01:41 PM
Joined: Dec 2014
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Ed_Flecko Offline OP
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I found this: https://bit.ly/2NmOGOT to be an interesting article, but I do have a question.

The writer makes, what *I* think is, a blanket statement, "Enthusiasts already know (or should know) that older performance engines require oils with elevated zinc and phosphate (ZDDP) levels. The reduced levels of ZDDP in current API SN engine oils demand that those with older performance engines use a different, more targeted, hot rod-style engine oil."

We, here at BITOG know, that some oils are very high in ZDDP (for example, Toyota Genuine Motor Oil - 0W-20, correct?), so I think it's "old-school" to poo-poo more modern oils just because you have an "older performance engines" and/or because you think the oil is too thin (which is, I think, what the writer is implying)?

Ed


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Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: Ed_Flecko] #5193099 08/21/19 04:05 PM
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ChrisD46 Offline
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*My primariy area of interest would be between SN+ 5W20 and 5W30 synthetic oils in a modern GDI engine where the OM states both viscosity oils are allowed.


'17 Hyundai Sonata 2.4L GDI 5W30 PUP / Fram Ultra #9688
'10 Hyundai Elantra 2.0L 5W30 (50%) / 5W20 (50%) QSUD / Fram Ultra #9688
'07 Kia Sedona 3.8L 5W30 Castrol EP / Fram Ultra #9999
Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: Ed_Flecko] #5193280 08/21/19 07:50 PM
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dave1251 Offline
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I'm not going to venture into that link but from your quotation it reads like an advertisement.


make the inside of your engine oil cap white.
don't use.
Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: Ed_Flecko] #5193345 08/21/19 08:48 PM
Joined: Dec 2009
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Garak Offline
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Car magazines (and people like me) have been crying about phosphorus reduction for years. Unfortunately, that ship has sailed. That happened with GF-4. I suppose it's good to remind their core readership. However, GF-6 isn't doing anything to "harm" flat tappet muscle cars beyond how GF-4 (or whatever other spec one wishes to pick) "harmed" them. As always, one has to choose an appropriate viscosity and specification. API and ILSAC specs are backwards compatible. However, most really built up engines, even back then when they were current and being modified, let alone now, were never meant to be run on the cheapest 10w-30 PCMO from the gas station then, nor now.

People screwed up engines back then and they do so now. Parts manufacturers screwed up metallurgy then, and that can happen now.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: Ed_Flecko] #5193855 08/22/19 12:37 PM
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1978elcamino Offline
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As an owner of a sbc with a big nasty cam and 5k stall converter, I would never put in a thin oil like TGMO 0w20, no matter what add pack it has. I use to run Mobil 1 15w50 red lid, now driven a few times a year it gets Rotella, which Im sure many people use with their older "hot rods".

Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: 1978elcamino] #5193857 08/22/19 12:40 PM
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kschachn Offline
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Originally Posted by 1978elcamino
As an owner of a sbc with a big nasty cam and 5k stall converter, I would never put in a thin oil like TGMO 0w20, no matter what add pack it has. I use to run Mobil 1 15w50 red lid, now driven a few times a year it gets Rotella, which Im sure many people use with their older "hot rods".

Post us some pictures of this beast.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: kschachn] #5193911 08/22/19 02:03 PM
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1978elcamino Offline
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Originally Posted by kschachn
Originally Posted by 1978elcamino
As an owner of a sbc with a big nasty cam and 5k stall converter, I would never put in a thin oil like TGMO 0w20, no matter what add pack it has. I use to run Mobil 1 15w50 red lid, now driven a few times a year it gets Rotella, which Im sure many people use with their older "hot rods".

Post us some pictures of this beast.


I would love to but I would be embarrassed to show what it looks like now. Sitting in the garage with boxes stacked up on the hood and in the bed collecting dust. Life has taken priority lately to where time slips are becoming less important each year.

Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: ChrisD46] #5193956 08/22/19 03:24 PM
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Ignatius Offline
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Originally Posted by ChrisD46
*My primariy area of interest would be between SN+ 5W20 and 5W30 synthetic oils in a modern GDI engine where the OM states both viscosity oils are allowed.


+1


2018 Subaru Outback Limited - 95,000 miles
2018 Subaru Outback Premium - 37,000 miles
2012 Hyundai Accent GLS - 103,000 miles
2005 Dodge Sprinter 3500 - 168,000 miles
Re: "Think Thin: GF-6 Is The Latest Spec In The World of Engine Oil" [Re: 1978elcamino] #5194072 08/22/19 06:21 PM
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Garak Offline
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Originally Posted by 1978elcamino
As an owner of a sbc with a big nasty cam and 5k stall converter, I would never put in a thin oil like TGMO 0w20, no matter what add pack it has.

If it were an ordinary small block, I'd consider a Red Line 20 grade, but they are a lot closer to an ILSAC 30 in the first place by HTHS. For yours, nope, I wouldn't try it, either.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
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