| > If your vehicle was built with the factory towing package, I'm pretty | > sure that your vehicle has either the 3.23 or 3.73 rear end ratio. | > You need to determine which one you have. Look at the option label | > and find the option that starts with either GT or GU. You should be | > able to do an internet search on "GM rear end ratio" and determine | > what ratio your vehicle has installed. | >
| > If you purchased the fan clutch from a parts store (not a dealer), | > many times the aftermarket supplier only lists one part number for the | > application. If you purchased the fan clutch from an AC-Delco parts | > store and actually purchased an AC-Delco fan clutch, chances are you | > purchased the correct one because the parts book would list both. | > When you purchased the fan clutch, did the parts person state that | > there were two different part numbers listed and explain how to | > determine which one you needed to purchase? | >
| > As to the 20W50 recommendation, that will also rob horse power and | > retain heat due to the heavier viscosity. You might consider using | > AMSOIL 5W30 Synthetic. AMSOIL synthetics dissipate heat faster than | > any other oil - regular or synthetic - and will keep the crankcase up | > to 50 degrees F cooler when compared to other lubrications. | >
| >
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| > Used together with AMSOIL's Synthetic Nanofiber Technology Oil Filter, | > you can use the same oil and oil filter for 25,000 miles of normal | > use. | >
| >
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| > AMSOIL even has a synthetic nanofiber technology By-Pass Filter System | > that will filter particles as small as 1 micron and keep the oil | > analytically clean for up to 60,000 miles. Engine wear is caused | > primarily by particles between 1 and 2 microns in size. By using a | > By-Pass Filter, you can keep engine wear to a minimum by filtering out | > and trapping particles of damaging size. | >
| >
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| > If you have any other questions, please don't hesitate to email me | > directly. I usually respond to inquiries within 2 to 4 hours unless | > I'm away from my PC. | >
| | | | | You're an Amsoil salesman what do you know about keeping a big block | chevy cool. You were a parts guy and you may know what fits what in the | gm parts world. I can tell you you don't know shit about big blocks and | overheating problems, oil temperatures, coolant temperatures and the | effects of replacing a light weight passenger car oil with a non | starburst c or cf rated 20w50 oil on them. I can also tell you all of | the parts stores sell at least three different fan clutches for that | vehicle and you can buy all three of them for what one gm fan clutch | will cost. Any one of the three will likely do the job just as well as | the Mexican manufactured over priced GM product. | | | Amsoil's recommendation to go 25K between changes is ridicules. Their | nano whatever 1 micron filter is a bypassing filter because at 5K miles | it's completely plugged and has to bypass or risk starving the engine | for oil. Amsoil is nothing but a bunch of hype and marketing to steal | money from stupid people that are willing to pay too much money for | benefits they'll never see. | | | | nobody #1 | | don't bother to reply I now really don't give a f*ck what you think. | |
Mr. Nobody#1::
You are very good at innuendos and accusations; however you have not provided any proof for any of your statements.
You've also misstated the facts I offered above by stating that "Their nano whatever 1 micron filter is a bypassing filter because at 5K miles it's completely plugged and has to bypass or risk starving the engine for oil". The By-Pass Filter System is, in fact, a synthetic nanofiber technology filter that is rated to be used for up to 60,000 miles and continuously filter particles down to 1 micron in size - therefore keeping the oil analytically clean.
You can read about the Synthetic Nanofiber Technology here:
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Be sure to read all the way to the bottom of the page. It explains how the synthetic nanofiber keeps the filter from plugging, offers superior filtration when compared to cellulose filters, and how the filter maintains full flow to provide engine lubrication throughout the full 25,000 miles.
The starburst symbol to which you refer is the A.P.I. logo and oils that have the A.P.I. licensed logo only need to meet the minimum specifications for each rating in order to use the A.P.I. logo on the product. See the 2nd link below for affirmation of this statement.
AMSOIL manufactures engine lubrications which meet the A.P.I. specifications for those that need to be reassured by the A.P.I. certification. The link just below this paragraph points to a 5W-30 engine oil that meets the A.P.I. specification and is rated for use up to 7,500 miles OR up to 12,000 on engines with oil life monitoring or upon factory recommendation.. AMSOIL also offers A.P.I. rated engine lubricants in 5W-20, 10W-30 and 10W-40.
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Although the XL oils are a very fine quality lubricant, they are not the best quality lubricants that AMSOIL offers. AMSOIL addresses the subject of why their best products - the 25,000, 35,000 and continued use based on oil analysis - are not A.P.I. certified. If you care to actually read the article, here is the link:
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AMSOIL has spent millions on Research & Development and have been in business touting extended oil drain intervals since 1972. If AMSOIL was being untruthful or deceptive, they wouldn't still be in business.
Continue to change your oil at 3,000 mile intervals OR learn how the oil companies have been promoting 3,000 mile oil changes just to prop up their bottom line.
Here is a comparison of 3,000 mile petroleum oil changes to AMSOIL's
25,000 mile oil change.
It would take 8 oil changes at 3,000 mile intervals to equal 24,000 miles. Each 3,000 mile oil change will average $30.00 to have it done at Jiffy Lube or equivalent That's a total of $240.00 You have to make 8 trips to get the oil and filter changed. There are 8 changes X 5 quarts = 40 quarts of waste oil to be recycled. Even if you can get it done for $19.95 per change, that is still $159.60.
Now, if you used AMSOIL, 5 quarts of ASL 5W-30 Oil which is engineered to perform for 25,000 costs $8.75 per quart for a total of $43.75. An AMSOIL synthetic nanofiber technology oil filter will cost about $16.00 (price varies depending on the vehicle - I picked one of the higher priced filters).
So, 5 Quarts of ASL 5W-30 = $43.75 1 AMSOIL Oil Filter = $16.00
The total for parts is $59.75 plus applicable sales tax. There is still labor to install the oil and filter. That will probably be $12.00 to $15.00. Total for parts and labor = $74.75. There are only 5 quarts of waste oil to recycle.
Compared to lowest price above of $159.60, that is a savings of $84.85 plus you only have to take the vehicle once to an oil change facility and ask them to install your oil and filter.
Labor pricing will vary depending on the state and locality.
AMSOIL - Offers the absolute best in lubrication and wear protection AMSOIL - Is the only lubrication company to offer a guarantee - In Writing AMSOIL - Is more effective at dissipating heat and will lower crankcase temperature by as much as 50 degrees AMSOIL - Reduces friction thereby increasing fuel economy AMSOIL - Resists high temperature breakdown that forms sludge and varnish AMSOIL - Offers the lowest temperature fluidity thereby facilitating cold weather cranking AMSOIL - Reduces Oil Consumption and Emissions (see chart on linked page)
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The AMSOIL Guarantee:
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The above information is offered as information for any who are interested. I apologize in advance for the lengthy post and will attempt to keep future communications at one viewing page or less.
Thank you for your time and patience.