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When I first built my 383 small block, UOA's showed that I was getting some junk in my engine. Not a whole lot, but Terry suggested I check for a vacuum leak or PCV leak. I believe I've tracked it to the dipstick tube not being sealed at the insertion point at the block. What would be the best...

My truck was stolen on Tuesday the 5th from a Costco parking lot here in Bakersfield Ca. It was recovered that Friday evening in an obsolete orchard about 50 miles away. The truck stands out quite a bit, with a cowl hood and SS logos. Engine is a 383 stroker that puts down 330 hp and 380 tq to...

Mobil 1 racing sounds like a good oil, and I like everything on the specs but the viscosity. What do you guys think about mixing it with a little Mobil 1 15w-50 to thicken it up to around 14-16 cst?

At what levels of sodium in a UOA would one determine a coolant leak? I just had a UOA with 15 ppm sodium. The oil being used is Castrol Syntec 10w-40 which doesn't show any sodium in its virgin oil analysis. Should I be alarmed?

Last UOA showed elevated sodium, and coolant level has dropped a little in the overflow tub. I wont take further action untill my next UOA shows more evidence. But if in fact I do have a small internal coolant leak, what would you suggest? Vehicle is a 97 Chevy silverado, with a 50/50 mix of...

My Mother just purchased a a 2004 Saturn Vue with the 250 hp V6 engine. It seems like a great vehicle with some great power, but I'm not very familiar with those engines. I believe that its a Honda engine. So what oil would you guys reccomend?

After doing some work on my truck, my headers are glowing. What causes this? Ignition is controlled by the computer, so am I just running lean? My headers are ceramic coated, and I have never seen them do this before. What could I have screwed up when working on it?

I accidently dropped the long rubber o-ring that seals my MAP sensor into my intake manifold. I have already spent over 6 hours in an attempt to find and remove it. No luck. Can I start my engine with no damage? (engine is a Chevy 383 stroker, basically a small block 350)It is a very small...

I live in Southern Ca. where freezing is not an issue at all. Would running straight water (not tap of course) plus a rust inhibitor be O.K.? And what additive should I use to prevent rust and corrosion...and protect water pump?

Here are the results from my 383 stroker with again......a bunch of lead. This is just getting annoying. 3,695 miles on this sample. Only 1/2 quart for make-up oil also. Aluminum 4 Chromium 2 Iron 11 Copper 12 Lead 36 Tin 3 Molybdenum 32 Nickel 0 Maganese 0 Silver 0 Titanium 0 Potasium 0 Boron...

I called Blackstone Labs the other day about an oil analysis I had not recieved yet, so he went over it with me on the phone. I have continuing high lead #'s in my analysis which worry me. He continued to say that some bearings are just incompatible some synthetics. Is this true? I will post my...

Exactly what the post says. If I were to have some trouble with my hood rubbing against the wire mesh part of my K&N filter (to the point where it almost wore a smal hole through it), what would happen? Would it affect any UOA readings?

I recently just changed my oil (look for new 10w-40 syntec UOA soon) and was able to get a good deal on Baldwin filters at my shop. $2.21 U.S., so I bought three. I always thought they were used primarily for heavy duty diesel and fleet use, but I thought I'd give them a try. However I still...

It is my sisters car, and has run on 10w-30 for most of its 90K miles to my knowledge. Car was bought from an old couple and was babied, but not sure of service. Its been garaged for the past 7 months while my sister is in Boston for college. I'm not in the know about these Infiniti engines, but...

I have a fuel injected 383 stroker in my 97 Silverado and thought I'd ask you guys if you think that 10 mpg in town, and 15 mpg highway is good or bad? Its an ext cab truck and is making about 410-420 hp at the crank (330 rwhp and 381 rwtq) This is not an LS1 oriented engine, but a conventional...

Had to replace an AC line on my girlfriends car, and lost all the freon, which happened to be R-12. (I thnik, since thats what the system asks for) Can I put R-134a in the R-12 system without any problems?

Fuel injected 383 Stroker. All driving was done in town with some swift pulls at times. I even made 3 dyno runs on this oil, and put down 330.5 rwhp and 380.1 rwtq. It is my daily driver. TBN=5.2 3,021 miles on interval 7,261 miles on engine. 1 quart make up Replaced with Castrol Syntec 10w-40...

I own a 97 Chevy Silverado with stock fuel injection, yet with 383 stroker; and on cold starts the engine either dies after a couple seconds (just as oil pressure rises), or will try to turn over but idle is VERY rough for about 15 seconds....we're talkin ka-chug ka-chug. IAC valve takes over...

I just recently switched to Castrol Syntec 10w-40 from the German Castrol I had in before. Vehicle is a fuel injected 383 stroker motor. I have never had starting trouble untill now (motor normally fires up very fast....and sounds mean) Motor will start fine for first two seconds ..... untill...

Does anybody have a VOA from the new Mobil 1 5w-40 Truck/SUV oil yet??? Please put my mind to rest to see if it is indeed rebadged Delvac 1!