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General Dakota Board
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jgreen3d
GenII
 
3/09/2008
17:25:47
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 Subject: high pitch hum from engine
IP: Logged
Message:
Ive noticed lately that after driving for a short while there starts a weird high pitched hum that seems to be coming from the top of my engine, possibly, but not certainly from the altenator. It slowly increases to become quite loud. Has anyone else experienced this? The engine was just replaced and Im working out the kinks. I did just take the underdrive pullies off and replaced them with stock. Any help would be greatly appreciated.
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Mr.T
Dodge Dakota
JOIN HERE
3/09/2008
17:52:49
| RE: high pitch hum from engine
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Message:
Remove belt and check water pump, alternator, A/C,
tensionner, idler pulleys for any excess play.
A recent water pump bearing failure on my truck (4.7)
made an incredible howling noise, sounded like major engine problems at first.
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Steven Roark
Dodge Dakota
JOIN HERE
3/09/2008
17:57:00
| RE: high pitch hum from engine
IP: Logged
Message:
I have never been impressed with Mobil 1, for reasons of increased engine noise, increased consumption, oil seeming to get dark to quickly for my likeing and a seemingly decreased smoothness in engine operation when compared to Amsoil or regular old dino.
Mobil1 is a good oil. I have never discredited Mobil1 on this site. Mobil1 has the appropriate additive base to be easily changed at 5,000 mile intervals (under NORMAL driving conditions). You did not tell us what Dakota you own, or what mechanical condition ... so here is our advice. Look in the owners manual if you want and go by the manufacturers recommendations.
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NOTE #1 : Manufacturers must take into consideration that you MIGHT be using 69 cent ( .69 ) per quart no-name or generic "crap" when they make their Owners Manual recommendations. They are always going to try to cover their butts. That is why they publish such a low number in the Owners Manual. Understand ? Mobil1 can EASILY go 5,000 miles under NORMAL driving conditions.
Note #2 : Intervals are beginning to edge up in this country because owners are demanding it. Oil change intervals in Europe are between 12,000 & 15,000 miles ... of course this is with ACEA (European) Certified Oils ... which are better than most API (American) Certified Oils.
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The Mobil1 sold in Europe is better than the Mobil1 sold in America. Why ?? Two reasons ... Because Americans are sold on the MYTH of 3,000 mile changes ... and companies like Mobil1 can't sell their "best" formulation for $18 a jug at Walmart. "lower" QUALITY & "lower" PRICE. Their best formulation (ACEA Certified European) would be priced at between $8 - $12 quart in America ... right up there with oils like Schaeffers & Amsoil which excede European ACEA Standards.
That is the only thing that really annoys me about Mobil1 ... they sell a lesser product here than they sell in Europe. Why ??? Are we not worthy of their BEST formulation?
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Redline, in a recently released press release, stated that some synthetic motor oils (without mentioning Amsoil) can IN FACT be used for extended oil change intervals up to 25,000 miles and perhaps beyond ... though they recommend that you don't try it with their synthetics. Thank You Redline !!!
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Now a word from Amsoil :
Though Amsoil advertises 25,000 - 35,000 mile oil change intervals, it is recommended only after establishing that your particular engine (along with your driving environment and driving habits) can do so with the guidance of Used Oil Analysis. HOWEVER ... Amsoil states that you can certainly extend your oil change intervals to 2 - 3 times manufacturers recommendation.
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Repeat (for the flamers)
I stated earlier : Mobil1 is a good oil. I have never discredited Mobil1 on this site. Mobil1 has the appropriate additive base to be easily changed at 5,000 mile intervals (under NORMAL driving conditions).
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Interested in a FREE Amsoil Catalog ? Click Below !
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
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