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Old 12-06-2017, 08:10 PM   #251
EngineHacker
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would you please recommend some 5w30 options other than Liqui Moly 5w40? 18 STI completely stock and having hard time decide between amsoil and liquid moly.
Its really just preference man. People will make this very scientific but the bottom line is as long as it meets the build spec it really doesn't matter one bit. If you want to keep it safe, just stick with Mobile 1 and step up to M1 5W40 if you want to beat on it. I've seen an 700hp eagle talon running on nothing but Valvoline 10W-30 conventional. The owner even admitted to sometimes just buying what ever he could find on sale in a 30-40 weight.
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Old 12-06-2017, 08:11 PM   #252
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Amsoil
Kind of expensive and unavailable.
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Old 12-06-2017, 11:44 PM   #253
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Kind of expensive and unavailable.
It's actually reasonably priced & their Signature Series protects 4-5x better than most synthetic oils not to mention all of it's other great qualities. Everything they sell is the best you can find. All you have 2do is sign up as a distributor/dealer & you get a much better price.
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Old 12-07-2017, 12:01 AM   #254
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It's actually reasonably priced & their Signature Series protects 4-5x better than most synthetic oils not to mention all of it's other great qualities. Everything they sell is the best you can find. All you have 2do is sign up as a distributor/dealer & you get a much better price.
I was also on that bandwagon a few years ago. Enjoy the brainwashing.
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Old 12-07-2017, 12:02 AM   #255
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I'm not sure what you're getting at.
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Old 12-07-2017, 08:42 AM   #256
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It's actually reasonably priced & their Signature Series protects 4-5x better than most synthetic oils not to mention all of it's other great qualities. Everything they sell is the best you can find. All you have 2do is sign up as a distributor/dealer & you get a much better price.

Got any independent proof of that? I didn't think so.

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Old 12-07-2017, 09:03 AM   #257
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I didn't feel like sifting through 11 pages but has anyone used Pentosin in their car? It's a European spec oil but I'm curious to try it. My co-worker has an Audi and he sweats by it. We stock it at the shop so I'm thinking about giving it a shot. I've been using gtx high mileage and can't say I'm burning oil any quicker than I normally do and with 110k on the clock, I dont know if I want to switch over to full synthetic now.
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Old 12-08-2017, 12:24 AM   #258
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I'm not sure what you're getting at.
Amsoil has a habbit of claiming their oil is special because you can run it for 25k or what ever. What they don't mention is that you can only do that in a vehicle that doesn't burn any oil (most vehicles do). You can probably run any A3/B4 synthetic for 25k miles if none of it gets burned.
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Old 12-08-2017, 12:11 PM   #259
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Honestly, I burn a whole lot less oil using Amsoil not to mention it holds up to whatever I throw at it. In my 500hp diesel running an oil bypass system I've gone 50K+ miles with many more miles to go.
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Old 12-09-2017, 01:18 AM   #260
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I didn't feel like sifting through 11 pages but has anyone used Pentosin in their car? It's a European spec oil but I'm curious to try it. My co-worker has an Audi and he sweats by it. We stock it at the shop so I'm thinking about giving it a shot. I've been using gtx high mileage and can't say I'm burning oil any quicker than I normally do and with 110k on the clock, I dont know if I want to switch over to full synthetic now.

Brand doesn't matter. Just look for oil with good specs. Hard to beat Porsche and MB specs and most Wal-Marts carry three 0W40's for $25-$30 for 5 qts. that meet all of the Euro specs (except that M1 no longer meets BMW LL). Go for the Pentosin if you can get it that cheap.

Although you might want to go with a High Mileage synthetic like Mobil 1 10W30 since you've used conventional for so long. A typical Euro oil may start cleaning up some sludge and you may get leaks from your gaskets/seals. There's also a lot to be said for sticking with what you've been doing since you don't have any issues.
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Old 12-09-2017, 01:30 AM   #261
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Honestly, I burn a whole lot less oil using Amsoil not to mention it holds up to whatever I throw at it.

As a user of a LOT of brands, including Amsoil as a PC, the benefit of running Amsoil isn't the same today as it was only 5 years ago due to huge improvements in base oils and additives and other oils closing the performance gap.

I used Signature Series and it wasn't a good fit for my application. It had decent amounts of anti-wear additives, and boatloads of calcium for extended drains, but still a so-so HTHS and KV like any typical GF5 5W30. If I ran SS today, I would use the 0W40 but it doesn't make much sense to me if I have to pay an annual fee to get a discount and can get 0W40 from Wal-Mart or Amazon for <$30.

As current oil manufacturers/blenders are scrambling to reformulate their oils due to LSPI and intake valve deposits, Amsoil has followed suit and reformulated their Signature Series:

https://bobistheoilguy.com/forums/ub...ew_formulation

Lower calcium, ZDDP, and TBN, but at least a nice dose of the multi-functional additives moly and boron.
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Old 12-09-2017, 01:32 AM   #262
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Originally Posted by bluesubie View Post
Brand doesn't matter. Just look for oil with good specs. Hard to beat Porsche and MB specs and most Wal-Marts carry three 0W40's for $25-$30 for 5 qts. that meet all of the Euro specs (except that M1 no longer meets BMW LL). Go for the Pentosin if you can get it that cheap.

Although you might want to go with a High Mileage synthetic like Mobil 1 10W30 since you've used conventional for so long. A typical Euro oil may start cleaning up some sludge and you may get leaks from your gaskets/seals. There's also a lot to be said for sticking with what you've been doing since you don't have any issues.

Iíve read a lot of oil advice over the years on NASIOC, and this is the most succinct and lucid example I have ever encountered.
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Old 12-09-2017, 12:51 PM   #263
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Honestly, I burn a whole lot less oil using Amsoil not to mention it holds up to whatever I throw at it. In my 500hp diesel running an oil bypass system I've gone 50K+ miles with many more miles to go.
Well, if that works for you so be it. Also, your Diesel probably has a huge sump, I am willing to bet any cheap synthetic would last just as long. One day this debate will be moot. We'll be arguing about which LiPo cells are the best for our electric vehicles and why the dielectric material in brand x produces less voltage spikes on discharge.
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Old 12-23-2017, 11:30 PM   #264
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Well, if that works for you so be it. Also, your Diesel probably has a huge sump, I am willing to bet any cheap synthetic would last just as long. One day this debate will be moot. We'll be arguing about which LiPo cells are the best for our electric vehicles and why the dielectric material in brand x produces less voltage spikes on discharge.
I await that day.
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