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Is there a relationship between the quality of gas(dime store gas...lowest bidder) and an oils ability to maintain the additive package and suspend solids ? In other words, will using cleaner gas(name brand) result in longer oil life....

Just bought a Toyota Tacoma V-6. This engine jumps to 1800-2000 rpm at cold start . Dealer service mgr says this is normal and is designed to do this to aid quicker warm-up and comply with emmisions controls. I know this is a reliable engine and should outlast me but I am concerned about...

We have all read that engine sludge is best avoided by periodic maintenance with proper lubricants and filters. Several threads recently have eluded to particular oils causing varnish(light/heavy brown coating) on engine parts. Is varnish a prelude to sludge, is it harmful to parts, and do...

In your opinion,based on the knowlege we have from UOAs and oil/additive chemistry, which is more destructive to a gasoline motor oil...time or mileage ?

If the answer is half as entertaining as the question, we will all have a great time !! Could this be the secret of GERMan Castrol.

This message isn't about a specific motor oil and I hope a moderator does not move it. What it is about is trying to salvage a wealth of insight and experience for the remainder of us who learn from this forum. Doug Hillary's massive experience with fleet trucks, innumerable OCIs, preventative...

Dreams late at night about my engine tearing itself from the truck, waddling over and pizzing black motor oil all over my legs. Driving with the radio turned up so not to hear the odometer screaming each mile past the 3000 mark. The "Change your oil every 3 mo or 3000 miles" Jiffy Lube sticker...

If the best strategy to prevent engine wear is to minimize deposits forming on pistons, rings and bearings...why don't most of us use a HDEO diesel oil that has 50% more detergent, double the dispersants and generally speaking, a much more robust additive package ? Seems to me, that trucking...

Just changed my 2005 Silverado (6 liter gas) from 5w-30 dino and Wix filter to M1-Truck & SUV(5w-40) and Mobile 1 filter. I noticed an immediate increase in psi at idle when cold and a 10 psi increase in oil pressure from 40 psi to 50 psi when the truck is warmed up and running at 2200 RPM. I...

I recently read the outstanding UOA that JohnnyG got with Havoline 5w-30 in his 5.3 liter Chevy truck. Is it reasonable to think I would experience the same results(12,500mi/14 months OCI)using the OLM in my 6 liter gas 3/4 ton Chevy ? It appears his driving habits are similar to mine, we have...

Tons of threads on Old Lady drivers and short trips considered as "severe service". I make short trips almost daily (less than 2 miles) and my temp gauge comes up to normal operating temp fairly quickly, usually in a couple of blocks. I assume my oil is at operating temp as well. Does it take...

My 3/4 ton truck w/ 6 liter gas motor is a PITA to change the oil. I would like the Fumoto drain valve but their website says "some 6 liter Chevy trucks may experience problems with installing the valve dues to clearance problems". Does anyone have this valve on their 6 liter and does it work...

I have scoured the forums and several posts (and the material data sheets for both oils) lead me to believe the M1 T&SUV 5-40 is a "rebadged" Del Vac synthetic. Would M1 T&SUV and Mobil 1 filter be good for a 1 yr/10,000 mi OCI in a 6 liter gas Chevy truck ? I would like the additional...

I was in the GM dealership today and the service manager said the Texas Highway Patrol just converted to Amsoil 10-30 on 20K OCIs with a filter change every 7k and 1 qt of topoff oil. He did not know if they were doing UOAs. The officers bring in the filter(brand ?) and qt of oil for the...

I am a 53 yr old recent "convert" from 3000 mile/dino to 10,000/syn OCIs using M1 oil & filters. Based on your experiences, would maintenance records reflecting these extended OCIs help or hurt the resale value ? In other words...does the mainstream used car buyer still expect a well-maintained...

Oh no...another newbie !! I have been lurking for awhile and there is a LOT to learn about oil ! I have a new 6 liter Chevrolet 2500 HD gas truck w/ 3000 miles that I would like to convert to synthetic from dino. I drive about 12,000 miles per year and would not consider it severe service...