Loud Lifter Knock/Missing coolant/Intake Manifold Gasket

[BlazerLT]

Originally Posted by blazee

it is the same price as the normal Mobil1

You sure about that, I heard it is 5 bucks more a jug.

[blazee]

I saw it last night. The normal and the extended life were both 4.84 per quart. Didn't see the jug. I was there late and they were just putting it on the shelves. They could have put the jugs out after I left. Next time I go in I'll see if they got them. I got about two weeks before I'm due for a change. I think I'll flush and switch to the new stuff. I'd like to use Mobil1 or amsoil filter too, but no one around here carries them.

[lou S.]

The mobil 1 extended performance IS NOT an API licensed oil for the most current categories because it does not meet the fuel economy test. It does meet the engine durability and protection requirements of the spec. So what does this mean if you don't care to much about fuel economy and want an oil that "guarantees" protection out to 15,000 miles----go for it.

[lou S.]

The suggested price range for the Mobil 1 extended is $5.79-$5.99/qt. and the price for the "traditional" Mobil 1 is around $4.99 at pep boys and $4.68 at walmart. Obviously price will depend on the individual retailers buying power, sales, etc.

[BlazerLT]

Ah, so I was right, close to US$5 more per jug.

Just remember, you will still have to replace the filter at 7500 miles.

Also, I recommend a flush before the switch if you are changing from conventional oil.

[lou S.]

Yep. People forget the filter change. A flush is a good idea----why compromise the great benefits of a syn. oil by mixing it with some "leftover" conventional mineral oil based engine oil.

[blazee]

Well I know for a fact the quarts are the same price at my walmart. I'll check on the jugs if they got them and let you know.If them being the same price is a mistake hopefully they won't catch until after I get mine.

[BlazerLT]

Originally Posted by lou S.

Yep. People forget the filter change. A flush is a good idea----why compromise the great benefits of a syn. oil by mixing it with some "leftover" conventional mineral oil based engine oil.

No so much that, but the synthetic will clean the engine and dissolve out the sluge and dirty the new oil very fast.

[blazee]

Update on the price of oil in Florida:

They changed the price yesterday. So now it is close to the price you heard LT.

Quart
Mobil1.................$4.84
Mobil1extended.....$5.36

Jug
Mobil1.................$19.97
Mobil1extended.....$23.82

And lou, you are right, the new stuff doesn't have the API certfied stamp on it.

It also says that you don't need a special filter to go 15,000 miles.

I just bought the old Mobil1, I have used it in my Impala since I got it 7 years ago and have had no oil related problems. In a few days (as soon as my oil cooler lines from RockAuto come in) I will flush the motor and switch the Blazer over to it.

Anyone see any problems with changing it every 2 months at 8,000 miles. I'll be using Mobil1 10-30 with a NAPA GOLD oil filter.

[lou S.]

Mobil does hope to have this product certified by the API in the very near future while maintaining the 15000 mile guarantee. If you are generating 8000 miles/2 months one can assume that it is mostly highway miles at a constant speed so you should be able to take it up to that time frame for changing your oil. May want to consider incrementing up to 8000 miles depending on what mileage you change your oil at now.

[blazee]

The majority of it is stop and go (my wife uses it for deliveries) right now I am changing every 3,000....well I buy the oil at 3,000 but it is close to 4000 when i actually change it.

[blazee]

Come to think of it with the miles I put on, it should be about 50/50. Her doing stop and go and me putting on interstate miles.

[lou S.]

You should be able to get to 5-6000 comfortably to start with and see what it looks like.

[BlazerLT]

I would push it up to 8000 miles. This oil will easily take it with flying colours.

It has a TBN of 12 which really really high.

I think you could even go over 10,000 miles.

But do 8000 miles and send a sample to Blackstone labs for an oil analysis. Best 30 bucks you will ever spend.

[blazee]

I check my oil level pretty often, as long as it looks clean I should be okay....right?

oh....If anyone needs oil cooler lines get them from rockauto. Dealer said $91. Rockauto $20