Recent content by tai

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    Confused by VW's recommendation for 1.8t

    So the consensus here is that VWoA knows what they're doing in recommending Mobil 1 0w-40 but not Mobil 1 10w-30 or 5w-30 because the latter 2 are not as good in the 1.8t as the first? How about the other synthetics on the list? Anyone want to say which are better than Mobil 1 0w-40 and are...
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    Confused by VW's recommendation for 1.8t

    RL331, I'm using Mobil 1 10w-30 because the user experiences I've read here has been positive, more so than the 0w-40. Many times folks here say 10w-30 is the most shear stable of the Mobil 1 oils. And before I received the letter from VWoA, 10w-30 synthetic would have met the requirements in...
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    Confused by VW's recommendation for 1.8t

    Yep, looks like VW changed their mind about what's good enough for the 1.8t engine. Here's the list of oils approved for use in the 1.8t <img src="http://img.photobucket.com/albums/v160/vling/RandomStuff2/oillist.jpg" alt=" - " />
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    Confused by VW's recommendation for 1.8t

    Hi all, I received a letter from VWoA yesterday extending the warranty on my Passat's 1.8t engine if damaged was caused by oil sludging. The letter included a list of oils approved for use in the 1.8t that are available in NA. My confusion stems from how VW only recommended only one Mobil 1...
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    Dino oil safe for high revving engines?

    HondaRD, how often do you change the oil? Is the interval the max that the UOA's indicate is reasonable for Chevron Supreme in your car?
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    Dino oil safe for high revving engines?

    What's your opinion about a good 10w30 conventional oil being used in a small, high-revving (7000RPM) car engine? The driver, BTW, redlines the car daily. Are the good dino oils pretty shear stable in this application? Should the change interval be reduced to 3K miles? Should synthetic be used...
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    High Temp High Shear - does viscocity grade matter anymore ?

    <blockquote>quote:<hr />Originally posted by Fillherup: <strong> What I found interesting was the knee curve of the HTHS test was around 2.6. Hmmm, wonder is there is some tradeoff going on here with 5w-20 CAFE oils that just happen to be around 2.6 HTHS. </strong><hr /></blockquote>Does this...
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    How fast can Mobil1 0w-30 thin out?

    Actually, I've been using it. Got 12 quarts of Mobil 1 TS 0w-30 a while back for real cheap. Then I started worrying that it'll shear down quickly in my Miata, with the way I drive.
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    How fast can Mobil1 0w-30 thin out?

    Is there a spec that corresponds to shear stability?
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    How fast can Mobil1 0w-30 thin out?

    <blockquote>quote:<hr />Originally posted by Jay: <strong> M1 0w-30 seems to be very shear stable if you look at the UOA reports on it. In fact, according to an SAE paper published by Mobil, it may be their most shear-stable 30-weight. I think the oil's weakness is volatility not shear...
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    How fast can Mobil1 0w-30 thin out?

    Let's say you're using M1 0w-30 in a non-turbo, with severe driving conditions. How fast can it thin out and need to be changed? If it was mixed 3-1 with M1 0w-40, would the change interval be extended?
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    HT/HS

    <blockquote>quote:<hr />Originally posted by buster: <strong> It seems the ideal HT/HS for a performance car would be 3.5 or greater. </strong><hr /></blockquote>Where or how did you arrive at this? Just curious.
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    Are Group III quasi-"Synthetics" Companies Price Fixing?

    Another question is, will Mobil 1 be a group III oil in the future. Same price + less expensive to produce = more profits. Hey, worked for the other oil companies. Consumers don't know better, so why not. That's what I'm afraid of.
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    Pennzoil 10W30 Purebase

    <blockquote>quote:<hr />Originally posted by Shannow: <strong> <a href="http://www.pennzoil.com/penn/products/car_truck/pdfs/motor_oil/Multigrade.pdf" target="_blank">10.5</a> in a range of 9.3 to 12.5. A little thicker than M1 10W-30. </strong><hr /></blockquote>Can this value be used in lieu...
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    2001 C5 Vette Recommendation

    Please help me understand something. Why is the piston slap occurring only at startup? And if it's only occuring at startup, why does the hot temp viscosity more important than the cold temp vis? By that, I mean if the oil is too thin at startup, using a 10w-30 or a straight 30w instead of a...
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