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Hi all, not to beat a dead horse as i'm sure this has been discussed ad nauseum but i was curious whether standard 20w50 motor oils for passenger vehicles were "ok" or even if data was available that returned good UOAs perhaps? I'm talking about oils like: Mobil Special 20w50 Castrol GTX 20w50...

Thank you this is very helpful info I'll inspect the MAF sensor and associated components and adjust accordingly. Right now I'm getting about 12-14 mpg city Add I get 15-16 highway (maybe more) This seems on the low side of average compared to other trucks of this year but it's always been...

Thanks for replying I should've mentioned that both knock sensors were changed about 15-25k miles ago. The rear was corroded add throwing a DTC but regarding spark knock the was no change before or after Issue persisted same as it stays had been

Hi guys I've got a 2004 Silverado 5.3L V8 with 175,000 miles that has been having spark knock intermittently since I got the vehicle in 2007 with 65,000 miles. I always use 87 octane fuel Only in the past 3-4 years have I been actively searching for a resolution but I found that with this...

Im sorry I wasnt very clear about a few things: I waited approx an hour before adding any water to the engine. Also, the engine doesnt require new plug wires each time you remove them, they just tear and brake very easily because they're made like [censored] and it seems like they slant...

Hi all, thought about posting this in the cooling section, but maybe it fits here better. We have mild temps where I live with 1 or 2 freeze out type weeks and this last one back early January saw my trucks thermostat get frozen stuck and consequently over heated. Because I was on the phone...

Hi all, Quick question regarding long term use of conventional vs. synthetic oil... On some of the more in-depth videos discussing long term use of synthetic they tear an engine down and show that the cross hatching on the cylinder walls is still intact with engines ran on synthetic... I was...

it might also be of benefit to add that in addition to its use in engine oils Mo is finding use in a range of other automotive products... Off the top of my head i know its used in a range of different brake system lube products ranging from caliper and pin (along with silicon and graphite) to...

Originally Posted By: caravanmike I thought minimum speed to unlock was 35mph. Mine scrubs after locking until I get up to speed. it very well could be doing this, i dont make a habit to speed up after it locks because im afraid of making it worse. now that you mention it though, its probably...

Hi all, I have a 2004 Silverado with around 170,000 miles on it, OEM all components original even the G80 Locker. The fluid in the diff was changed about 15,000 miles ago with 75w90 semi-syn supertech GL5. Just that fluid and no additive was added since the manual stated specifically not the...

hi all, i have a 04 silverado and it has had dexcool in it since new, likely. i have been wanting to change over to green coolant for EVER...but been afraid due to the fact that GM says their aluminum radiators will corrode without dex cool in them (my [censored] motorcycle has an alum rad...

the other 5 quarts is 10w30 supertech conventional

Hi all, Last oil change I put in about 1.1-1.2 quarts of a mystery oil. Im 99% sure its Rotella T5 but its either 5w30 or 10w30. I've been having a very small oil burning issue, 1 qt every 5,000-7,000 miles. BITOG laughed me out of the board when i brought it up. And rightly so, after putting...

my concern lies in the development of rust internally, above and below the cylinders/pistons in engines that sit for longer than say 2 years at a time. can cam shafts surfast rust? etc. can lifters or lifter bores rust during sitting? above the cylinder is kinda worrying too, can rocker arms...

Hi all, I have engines that are not classic/hot-rod but that still sit for long periods of time throughout the year and rust inside the engine is something i worry about whether it even happens and if it does, if my oil is protecting against it. Just looking for some info on engine internals...

dont factory fills have special additive packages like zinc and moly so that the new engine gets a nice high dose of those engine protecting elements for the first 5,000 miles (or whatever proscribed interval is) ? i always thought that was the reasoning behind the factory fill and the...

hi all, about a year or year-half ago i added a PCV catch can to my PCV system and decided to go ahead and pour a solvent into vacuum line while i had the system disassembled. 1 16 oz container of B12 chemtool i think it was, cleared up some spark knock that would always occur at the upper rev...

Kendall GT1 is the oil i've been eyeballing, but i cant seem to find it in stores. it seems i need to purchase it online or something. Also, can a moderator please move this to the motorcycle forum. I looked up and down for the subforum but never found it.

hi guys, im wondering if someone can recommend a cost effective engine and primary oil for harleys that may have been examined and accepted among the board. the manual states i can use 20w50 HDEO if "no harley oil" is available. but im wondering what i can use for the primary. i ran rotella...

Just changed my oil with super tech oil and filter. I'm wondering if the super tech filter is capable of doing its job for a 5,000 mile change interval. Also here in Houston I typically run 5w30 in the winter but decided to stick with 10w30 so I'm not constantly changing things up I like to...