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Yes. Actually I always use a whole can when I do it. My mechanic says 1/3 can is ok but a whole is even better in a vacuum line. Then get another whole can and put it in wih the gas. After you let it sit for 15 min. or so go drive it and beat the pi$$ out of it. If you just let it idle it will...

Well read the discussion in this link - http://www.cadillacforums.com/forums/showthread.php?t=226 They shoot the topic back and forth. Some agree it does benefit the engine to do this some don't. I think it does have a positive effect on removing carbon deposits though. Plus I bet you could do...

Barsleak (when not overused of course) will not plug areas of the cooling system other than a leak itself. It's also a factory installed supplement on some vehicles going all the way back to the 80's.

I wonder how well doing WOT runs would stop oil consumption problems, clean out some carbon, ect...

Would it be safe to use SuperTech 5W30 year round even during the hot summer months? I think if I don't do any starting below 0F like the manual says then the 10W30 should be ok right? But yes the 5W30 would help with cranking speed and battery life. I just don't know if going to a 5W30 would...

In my opinion I don't think it will do any harm at all. Please read the entire discussion from where I got this quote. It's 3 pages long. (I know I'm sorry )Here is the link- http://www.cadillacforums.com/forums/showthread.php?t=226 I think the guy I quoted is pretty reputable over on that...

Here is something interesting I just read over on another forum by a well respected member and was wondering what you guys thought- Is this a good idea, will it help maintain a cleaner engine, promote less oil consumption, ect...? So is it good to do WOT blasts down the highway and what could...

The manual says not to use a 5W30 when it's warmer than 60F. What if I do? And why can't you use that when it's like 80F outside? Because if I could I would just use 5W30 all the time reguardless of temperature. Ya know what I mean?

I have a 92 LeSabre with the 3800 V6 with about 84,000 miles on it and I was wondering what weight is ok to use this winter. Right now I have regular SuperTech 10W30 and a SuperTech filter on it. Im up north so it's starting to get pretty cold. It was about 8F outside this morning. It usually...

I know this probably has nothing to do with oil lubrication at all but I thought I'd throw this out there as I'm stumped on what it is. Ever since I bought my car a few months ago the car has idled at exactly 850 RPM when in P or N and idled at exactly 750 RPM when in gear. About a week ago I...

It is kinda idiotic but you wouldn't believe how many auto makers still use an aluminum block and iron head design. Almost everyone I've seen has a head gasket problem. The aluminum heats up a lot faster and expands more thus creating a situation in which the head gasket has to seal these two...

Yeah the 4.1 (HT4100), 4.5, and 4.9 V8's. Aluminum block with cast iron heads. They didn't exactly get it right though because these engines are notorious for coolant leaks and head gasket failures. They even came factory with GM sealant pellets or "stop leak" in the cooling system. If you own...

The vehicle is a 1996 Chrysler LHS with the 3.5L 24V SOHC engine. Not really that old of a car. Anyway so maybe it's due to the fact that Chrysler thought the 5W-30 were shear out of grade to quickly? I just don't see the harm in running a 5W-30 the whole time. I mean come on they are both...

Why is it that in some vehicle manuals it says you can use 10W-30 from 0F - 100F+ and you can use 5W-30 from -0F - 60F? The owners manual even says DO NOT USE 5W-30 ABOVE 60F. Why can't a 5W-30 be used when its 75F outside? What about using an even lighter wieght like 0W-30? I'm just wondering...

Is a thinner oil or a thicker oil more desirable for an OHC vehicle because I've heard that pushrod engines can run a little bit thicker oil than an OHC engine. Do you think I could use a 15W40 diesel oil in and OHC engine with 153,000 miles? I'm might try it to see if it cleans out any deposits...

Does your "B" not work either?

Oh no!!! Purolator might think "you know what, he's right. From now on we will always use cardboard!" j/k

The PAO synthetics better not increase in price cause that would be a bunch of bull****. Kinda interesting to see if certain ones will increase in price.

I don't know how good having a magnetic plug over a normal one is. I mean all it is doing is collecting metal particles before it goes through the filter. The filter should catch all metal particles each pass around. It is just getting it before the filter does. The filter should catch it all if...

I don't think the oil has hardly anything to do with engine longevity. Thats just my opinion but there are plenty of vehicles around that have ONLY used dino oil with 3 month/3000 mile intervals that have upwards of 200,000 - 250,000+ miles. They still run good - no consumption, no smoking...