Whats the difference between....

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Drew nailed it. XL7500 is a big waste of money. It's Jack*** Almutuzio's fully API oil that can satisfy the quick lube market and those who are really concerned about full API requirements. Right now ASL/ATM 10w-30 Amsoil are two of the best oils for your money. Of course that is my opinion but I do believe that. [ November 20, 2003, 08:35 PM: Message edited by: buster ]
 

Patman

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The XL7500 also isn't geared for extended drains like the 100% synthetic Amsoil is. And since the XL7500 is API approved, it's additive package is not as strong as the 100% synthetic version.
 
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They both have pour points of -60f. The xl-7500 has lower ash and would be better for your cat converter. If you are not going over 7500 per drain, use the XL7500 series oil.
 
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You will see less valvetrain (iron) wear with the XL-7500 series oils than you will with Mobil 1, for drain intervals of up to 7500 miles. Would anyone like to bet $100.00 on that? How 'bout it Buster? [Wink] The regular 5w-30 and 10w-30 are even better oils however, particularly in terms of the additive chemistry. They have TBN's of about 12.3, vs 10.5 for the XL-7500 Series oils .... Tooslick [ November 21, 2003, 01:21 PM: Message edited by: TooSlick ]
 
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The price differential is such that I feel one is crazy to purchase the XL series. The full synthetic can be had for 50 cents a quart difference. A no brainer IMO. Amsoil just did not reduce the price enough on the XL when it went the hydrocraked route!
 
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