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Originally Posted By: tdi-rick True, but sometimes we can't pass on info due to professional in-confidence. What I can say is that LE use a proprietory additive package, much like RLI, and it's extremely effective. Understandable, but can we speak in generality?

Originally Posted By: CT8 All regurgitated marketing claims aside can any one prove the differences between any of the major brands Yes. Look at the certifications and tests they pass. That is the objective way to compare them beyond the obvious datasheet numbers. I'm a bit disappointed to see...

Originally Posted By: Vern_in_IL I say if the free market wants it like this, then so be it! The automotive industry does not need more regulations. I'm not going to get into the political debate around regulation, but I don't agree that it's a "free market" when it comes to brake lamps. A...

If you guys would have actually taken the 14 minutes to watch this instead of strawmanning him within the first 90 seconds, you'd have seen that he makes some good observations as a non-enthusiast. I've actually subscribed to this guy's YT channel for a while now. He has some pretty fascinating...

Motul Gear 300, hands down. Long-proven severe duty record in race cars and unmatched viscometrics. Only other fluid that can come close to it on paper is Gulf's Competition gear oil, but that stuff is impossible to find here. Gear 300 is readily available. Renewable Lube's 75w90 looks amazing...

Originally Posted By: MolaKule Quote: Otherwise my thought was to run Motul Gear 300 LS. It worked quite well in my Audis and is also a stout formula. I see no advantages of using Renewable Lube over the Motul Gear. Cheaper: $12 vs $25 Easier to get: Amazon Prime vs online retailers with...

My Corvette will be due up for a rear differential fluid change pretty soon. GM recommends it every 24 hours of track use. OEM fluid is an 75w90 GL5 LS. I've had my eye on Renewable Lube Bio-SynXtra GL-5 LS but am not seeing many UOAs or info on here for people using it for "severe duty". It...

Originally Posted By: johnLZ7W Originally Posted By: dparm The viscosity would have to be way out of spec for it to think the pressure is low, if at all. What kind of corner did you see the warning light on? It was at the end of a short straight (between turn 3 and 4 at Portland...

Originally Posted By: johnLZ7W Originally Posted By: Audios Is it possible the enigne was starved of oil under heavy braking? Oil was probably all in the front of the pan, and maybe was not near the pickup? That's a good point and worth considering. I don't think I was going into the corner...

Possible brief starvation on the track. I don't think it's dry-sumped. The viscosity loss could be due to fuel dilution under hard driving, but it is indeed possible that the oil formulation changed. I would maybe try a different oil and see if it can withstand the rigors of track driving...

Originally Posted By: EricWalls Originally Posted By: dlundblad Very nice sounding engine. You can tell she just wants to go fast. What does the manual recommend oil wise? It states for the 5.0L engine to use 5w-40 for normal everyday use (doesn't specify synthetic or not) then goes on to...

Originally Posted By: AVB I would go with NTK or Denso. Agreed, huge OEM suppliers. Bosch should be okay too.

I'd pay for TBN & TAN next time -- try and establish the proper interval. I bet you could go longer.

Originally Posted By: OVERKILL Perhaps run Castrol "TWS" 10w-60? It's the product BMW used to help alleviate their oil consumption issues and it is generally an excellent oil. It's been relabeled as Castrol Edge 10w60. Not available in most retail locations. You could use the new BMW...

Originally Posted By: Lolvoguy Originally Posted By: robertcope Time to hit the track and give that motor a good workout. I agree. First thing I'd do is warm it up gently, then open it up for some extended high speed runs. These cars were not built to sit and idle in traffic or "grannied" for...

Lubrizol actually had a nice video about it:

Originally Posted By: HYUNDAIFAN0001 WOW - never considered overthinking all this so much. Heck - some $0.96 new empty ironing spray bottles from Walmart have done the trick here for all sorts of care care products for years. Just bought 2 more of them last weekend. Also have purchased...

Originally Posted By: Cujet I also gave up with the small squeeze action sprayers, and purchased Stihl SG10 spray bottles from the local chainsaw store. They hold about a quart and have a pump on top. They hold up fairly well, have a large opening, are very tough, and have some brass parts...

Poorboy's has been around for a long time. I'm pretty certain a lot of these brands are just relabeled by the same blenders or whatever.

Originally Posted By: OSUFan86 I've used many different brands of products over the years & I've learned a lot about detailing. I know working in smaller sections helps when working outside in direct sunlight. I currently use Meguairs M105 & M205, ONR & 3D HD Speed. I've used a lot of Griots...