Bluestripe67

Who uses Mobil 1 synthetic in their Vette new or old? I know, not too many on the old side, but here's the deal. Anyone in the mid-atlantic area, near a PepBoy store, check out this sale. 5qt Mobil 1, Mobil One oil filter, $29.99. I bought a double batch (10qts, MB takes 8qts) of the oil for my MB and the 2 spin on filters for my '67 Vette. Normally all this together would be over $100 plus tax. I know some of you can do deals, but here's one without any hoops. FWIW. Dennis

Dan Hampton

I use it in my VW race cars but not in the Corvettes. Heck of a deal, though.

Kensmith

I bought (4) 5 quart packs plus filters of O'Rileys full synthetic 5-40 oil at $17.99 for each 5 pack including filter. I was told their full synthetic is actually Mobil 1 synthetic. I use it in my daily drivers only. Not in my 65. So I have 4 filters and 20 quarts of full synthetic for less than $80.00. Check O'Rileys to see if they are still on sale.

Frankie the Fink

I'll check it out.
Mobil 1 15W-50W is perfect for solid lifter cars and has the proper amounts of ZDDP.

cliffc8488

A mechanic told me that synthetic oil attacks RTV and he recommended against it in old cars. He said if you use after a while you will develop oil leaks. He recommended Rotella.

GreaseMonkey

Great deal since my ZR-1 takes 9 quarts

MiguelsC2

I have used Mobil 1 in my modern cars since the early 80s.Changed every 5k miles and I run quality gas. Always. Mostly Chevron some Exxon and Shell. All Chevron gas has their patented Techroline. Saves the injectors. Started using this on my BMWs back in the 80s. Factory heavily reccomended it. Now most premium quality gasolines have it.
My 02 Tahoe has 106,000 miles on it. I recently pulled the heads due to a non oil related lifter malfunction.
The shop next door had a Suburban with the same motor as mine.( a recent ebay purchase) But 5 years newer with 80k+ miles on it. Heads also off.
My pistons had no carbon build up (My assumption,quailty gas). The inside of my motor looked like it was new. No varnish at all. Burns 0 oil between changes.
The Surburban next door had thick carbon build up on the pistons and varnish you could write your name in. Not knowing what the other driver used, I can't say what made the difference.
My Mobil 1 motors have lived up to every claim ever made about the oil. Given their patent and the length of time before ANY other company had something even similar. I am a customer for life.

Ps. My daughter BMW X5 with 160k miles on it. Has all kinds of Varnish in it. The ex owned it previously and she just did the 7500 miles recomended oil services with "oil of the day". I think the dealers use Castrol. Ok Castrol fans. Don't shoot the messenger.
I have spent the last year bringing that one up to standards.A true synthetic Oil choice makes a big difference.

MiguelsC2

I have used Rotella in my older American performance cars since the mid 70s. But I am not using it for oil leaks. I am using it for the protective metals and additives lesser oils do not have.

Plasticman

I used it in my GMC Typhoon (as recommend by GM, due to the turbo). Never an issue.

But I had some left over after I sold the Typhoon, and decided I would try it in my 87 Vette (which never had any "leaks").

The next week I had 2 separate oil pan leaks (OEM silicone pan gasket).............

But I do use it in my 03 Vette.

I use Rotella in my flat tappet engines (including the John Deere).

Plasticman

MiguelsC2

I got started with it in my 930 Porsche. The turbo would cook (they say 600 degrees ) a quart of oil everytime you shut it off. Even with a dry sump, it still ruined the oil in no time.I think conventional oil boils in the mid 300 range. Mobil 1 changed that.

Frankie the Fink

I've run Mobil 1 for years....old cars, new cars...switched from conventional to Mobil 1 in many old cars....never an issue and no more leaks than the cars started out with....

I think the synthetic is just 'discovering' minor gasket/sealant issues that conventional oil can live with and so some believe its eating away at the material.

Model12

Several years ago I had been using dino oil in my wife's 92 Passat (5k oil change period). She did a lot of highway driving. Changed to M-1 at 90k miles and it started drinking oil a quart every 1000-1500 miles. No leaks, had to be consumption. Changed back to dino at 100k, and consumption dropped back to a quart every change.

Since then I have used M-1 in all of our new car purchases, and consumption is generally about a quart every 4000-5000 miles. Hmmmm...

pltmgr

My local Wal Mart is down to $21.50 for 5 qts of Mobil 1. I use it in my modern cars and at 5k change intervals experience no consumption. I use Rotella 15-40 in my old cars- just don't drive them enough to switch to Mobil 15-50. Although a big fan of Mobil 1 I had a DD go 160k and still had an immaculate engine which resulted from 53 oil changes (3K) using the cheapest oil on sale.

SupremeDeluxe

Costco has it cheaper than either Pep Boys or Walmart when they run it on sale every other month or so. It is $22.xx for a 6 Quart case at Costco here in the Chicagoland area. Now that I sold my C6, I am stuck with 3 unopened cases

mrtexas

Automotive lube oil boiling point is in the 650-900F range. It is heavy enough it has to be distilled by vacuum.

mrtexas

You may have had a point about gasoline in the past. Today 100% of gasoline, both Unleaded and Super is hydrotreated to reduce the sulfur content to very low levels of 50ppm or less. This improves the quality and stability. In the past, Unleaded regular had plenty of thermally cracked unsaturated, untreated blend components with sulfur content of up to 10,000ppm that were unstable. Another difference is the color. Gasoline now is pretty colorless rather than the orange/brown gasoline of the past.

Fawndeuce

Autozone or Advance had the same sale last season, they may have it again? I bought 10 qts with the two filters for my C6 that I have since sold.
I had read in Road & Track many years ago, that synthetic has smaller molecules than dino oil, and also doesn't swell the gaskets in older cars like dino oil, therefore the leaks. I had never read or heard anything about synthetic attacking RTV though?



Paul

Redbird

Nothing but Valvoline since 1964 and Valvoline full synthetic for the past 4-5 years. Never a problem with it and never paid anyone to do it for me.
John F

vetsvette2002

That is pure BS.

After a while, ALL engines will develop an oil, or coolant or fuel leak.

Dan Hampton

Just an observation on my part re: syn oil. In retirement I spend a few hours in the morning working for a former client who owns a fleet repair business. We service trucks and cars of local companies as well as nationally known names such as Fed Ex, Coca Cola, CP Rail and Charter Communication, to name just a few.

Most of these companies have maintenance schedules that call for oil changes every 3,000 to 7,500 miles, in some cases. None of these vehicles use Mobil 1, save one ambulance company. These trucks are driven hard, and in all likelihood, much harder than anyone on this forum treats their own daily driver(s). We use Mobil 5-30 for the non diesels and Delvac 15-40 for the diesel trucks.

Many of these trucks, which are mostly represented by the Big 3, have odometer readings that easily exceed 200,000 miles (450,000 miles in one case). In my four years at the shop I have never seen an engine failure attributable to oil. Some of these drivers do some dumb things which may cause an engine failure, but that is owner/driver error (not checking the engine for leaks, running with a pegged temperature gauge after losing all coolant, etc).

I used to use Mobil 1 in my vehicles but after four years of passive observation I really feel that the traditional oils seem to work so well in severe applications that my daily, grocery getter would be "over oiled" using Mobil 1. I will say that the vehicles we service who extend their oil changes to 7,500 miles between changes can and do exceed 200,000 miles but we do notice the upper end of the valve train starts to get a little noisy. These are medium duty Chevy pick ups.

Again, just some random observations from what I see day to day.