A Few Questions......

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Ive been reading the boards for hours tonight, and ive still got some quesions. 1. In the Chat Room hosted by this site a few days ago, 15w-40 was suggested to me for my 6.6L Trans Am. 67k Miles, and it doesnt burn oil to my knowledge. This is a Summer Only car. The plan was to use this oil with an AC delco filter, and change it every spring. a . I would like an Unbiased opinion on why Delvac 1300S is better than Delo 400. Or Vice Versa. I dont want to hear about any other oils besides those 2 please [No no] [Big Grin] 2. At 5k miles, Im plannin on switching my dads 4.0L V6 '034Runner to Synthetic. It calls for 5w-30 year round. a . Would using Delvac1 5w-40 be a bad Idea, since its against Warranty? b .How long could I go per change with said 5w40 oil, with Toyota oil filter. c . If I use 5w30 TriSynthetic, how long should I go per oil change using Toyota Oil Filter.
 
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1) Delvac has moly if you like Moly. Delo doesn't. 2) You should get an analysis after 4K to better make a decision. [ April 07, 2003, 10:02 PM: Message edited by: uconn1150 ]
 
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What kind of car do you have? [LOL!] Kidding..... Guess you couldn't fit the engine specs into the name? [stretch]
 
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For the Toyota under warranty, I'd stay within the warranty "recommendations." If you're going to use Mobil 1 (old TriSyn or the current SuperSyn), I'd use 10W-30 and the max mileage listed in the owner's manual, except 5w-30 in your Maine winter. (Isn't 10W-30 listed as an optional oil?) It's unlikely but if there's a warranty claim, why ask for hassle by using a non-recommended oil viscosity and non-recommended oil drain interval? Ken [ April 08, 2003, 12:15 AM: Message edited by: Ken2 ]
 

PontTransAm1978

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Well, the manual says that 10w-30 can be substituted, but 5w-30 should be used again at next oil change. Or something like that. And if I used 10w-30, I guess technically thats going against factory reccomendations. So I might has well be using 5w-40. Thanks for the input so far, Keep it up!
 
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quote:
Originally posted by Ken2: For the Toyota under warranty, I'd stay within the warranty "recommendations." ...
I agree. I think if you're using any premium full synthetic (such as Amsoil or Mobil products) then you can safely use the maximum recommended change interval, but I wouldn't go beyond that unless you're willing to: 1) establish regular UOA intervals (proving the oil's validity), & 2) go to court to defend yourself should a warranty denial come up.
 

PontTransAm1978

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C'mon, I know you people have opinions [Big Grin] Is there certain advantages to SS compared to D1. I know that D1 has better additive packages.
 
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