www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI 101

TDI 101 Got a simple/basic TDI question? Are you a newbie (new to the forums). Feel free to post your question here.

Reply
 
Thread Tools
Old January 19th, 2019, 17:49   #31
Mongler98
Veteran Member
 
Join Date: Mar 2011
Location: Northern MD
Fuel Economy: Race: 12mpg, Gandma:65mpg
Default

Quote:
Originally Posted by turbobrick240 View Post
Huh? So you're saying that adding a heavier oil to a lighter oil won't change the viscosity? Stay in school kids.
Topping off a already full oil pan will do NOTHING. If you had say the lowest on a dip stick you can have with out damage to the engine, adding a heavy oil to it might change it SLIGHTLY but will AT MOST be no more than by 25%. So your saying that a 5-30 add in at most 1 quart of 15-50 should theoretically increase the viscosity by NO MORE than 5. i fail to see how this will do anything other than waste money and basically do NOTHING.

Motor oils are MUCH more complex than just a simple # rating. I would rather have a 5-30 in my TDI than some mixed up oils that may have an adverse reaction to the chemistry involved in synthetic oil mixtures.
Mongler98 is offline   Reply With Quote
Old January 19th, 2019, 19:25   #32
turbobrick240
Veteran Member
 
turbobrick240's Avatar
 
Join Date: Nov 2014
Location: maine
Default

^ Synthetic oils are by and large compatible with each other. XOM wouldn't use an additive package in one mobil1 product that would have an adverse reaction with another mobil1 product. Adding a quart of M1 15w50 to 4 quarts of M1 5w30 would probably bring the properties of the blend pretty close to within the 5w40 range. Not necessary, but certainly not harmful. Do some reading over at Bob is the oil guy. Hint: tribology is not the study of native americans.

Last edited by turbobrick240; January 19th, 2019 at 19:28.
turbobrick240 is offline   Reply With Quote
Old January 19th, 2019, 22:12   #33
Geordi
Veteran Member
 
Geordi's Avatar
 
Join Date: Jan 2002
Location: Somewhere between Heaven and Hell. But it is really hot here in S. Florida...
Default

Quote:
Originally Posted by turbobrick240 View Post
Hint: tribology is not the study of native americans.
Of course it isn't.

It is the study of Tribbles.
__________________
---------------------------
I always knew beans would give me gas. But I never expected Diesel!
Geordi is online now   Reply With Quote
Old January 21st, 2019, 09:20   #34
AndyBees
Veteran Member
 
AndyBees's Avatar
 
Join Date: May 2003
Location: Southeast Kentucky
Default

I have a container at my garage that I invert each emptied oil bottle/jug to let them drain completely......... all blends, weights, brands, etc. I use it to add to the engines of my mulcher, mowers, pressure washer, generator, etc. Even with the small number of oil changes I do for myself and others, I'll accumulate about a gallon per year. I never considered compatibility to be an issue.
__________________
'84 Vanagon '02 ALH TDI engine Malone Stage 1 tune. CAT, SS 2" exhaust, E-vac system, DMF with upgrade pilot shaft, 4.57 R&P, fan assisted IC. (32 to 35+ MPGs consistently)
AndyBees is offline   Reply With Quote
Old January 21st, 2019, 16:00   #35
Mongler98
Veteran Member
 
Join Date: Mar 2011
Location: Northern MD
Fuel Economy: Race: 12mpg, Gandma:65mpg
Default

Quote:
Originally Posted by AndyBees View Post
I have a container at my garage that I invert each emptied oil bottle/jug to let them drain completely......... all blends, weights, brands, etc. I use it to add to the engines of my mulcher, mowers, pressure washer, generator, etc. Even with the small number of oil changes I do for myself and others, I'll accumulate about a gallon per year. I never considered compatibility to be an issue.
I see nothing wrong here.
Any issue I would have is if the engine or pump etc... Calls for NON Detergent oil.
Mixing oil was not much of my concern as it is more of a waste of money. I have a bad taste in my mouth from when I was a kid; my dad had a MINT vw supper bug, with 28K miles on it that we took to shows and what not. This was back in the early 80's and my dad needed to top off the oil. He made a mistake and got a can of SAE 30 vs the 10/40 that was in it. After he added it he realized the error and said, heh itís probably fine. On the drive home, not even 40 miles into the 200 mile trip, the engine threw a rod out the side and into the tire, he lost control of the car and put it right nose first into a guard rail. Completely totaled. I had a gash on my head and his baby was totaled. He had it hauled home so he could find out what the hell happened. SPUN BEARINGS. Now this car was OEM all original with 28K miles on the clock. Best conclusion, it was the added oil. He said he only had to add 1/2 the can. So who knows if it actually was the issue but I never mix oils due to this sad story from my youth.
Add whatever the heck you want.
Mongler98 is offline   Reply With Quote
Old January 21st, 2019, 16:48   #36
turbobrick240
Veteran Member
 
turbobrick240's Avatar
 
Join Date: Nov 2014
Location: maine
Default

Quote:
Originally Posted by Mongler98 View Post
I see nothing wrong here.
Any issue I would have is if the engine or pump etc... Calls for NON Detergent oil.
Mixing oil was not much of my concern as it is more of a waste of money. I have a bad taste in my mouth from when I was a kid; my dad had a MINT vw supper bug, with 28K miles on it that we took to shows and what not. This was back in the early 80's and my dad needed to top off the oil. He made a mistake and got a can of SAE 30 vs the 10/40 that was in it. After he added it he realized the error and said, heh it’s probably fine. On the drive home, not even 40 miles into the 200 mile trip, the engine threw a rod out the side and into the tire, he lost control of the car and put it right nose first into a guard rail. Completely totaled. I had a gash on my head and his baby was totaled. He had it hauled home so he could find out what the hell happened. SPUN BEARINGS. Now this car was OEM all original with 28K miles on the clock. Best conclusion, it was the added oil. He said he only had to add 1/2 the can. So who knows if it actually was the issue but I never mix oils due to this sad story from my youth.
Add whatever the heck you want.

Interesting story, but I highly doubt the 30 weight had anything to do with the spun bearings. 10w40 was a pretty crappy oil back in the day. That oil was more likely at fault. Those air cooled boxers didn't run forever anyhow- the nice thing was that it only took a couple of hours (or less) to swap in a new one.

Last edited by turbobrick240; January 21st, 2019 at 18:27.
turbobrick240 is offline   Reply With Quote
Old January 21st, 2019, 19:16   #37
AndyBees
Veteran Member
 
AndyBees's Avatar
 
Join Date: May 2003
Location: Southeast Kentucky
Default

Back in the day when I was much younger, I dabbled with mud-buggies, rail jobs as some people called them. We'd work on them three or four nights a week and then tear them up on the weekend.

Anyway, I built a nice engine for my buggy. After doing a few weekends, I changed oil at my uncle's garage. He had some bulk oil in 55 gallon drums. He also had some hydraulic oil in 55 gallon drums ......... Yep! I used the wrong stuff. On the next weekend out, by the time the last day was over the idiot oil light was flickering at idle. When we got back to his place, I was really scratching my head as to what was wrong... changed switches, etc. Then, finally figured out that I had used the wrong oil. We disassembled the engine to find rod and main bearings showing red....
......... very, true story! This was a really hopped-up engine.. lots of dollars invested!
__________________
'84 Vanagon '02 ALH TDI engine Malone Stage 1 tune. CAT, SS 2" exhaust, E-vac system, DMF with upgrade pilot shaft, 4.57 R&P, fan assisted IC. (32 to 35+ MPGs consistently)

Last edited by AndyBees; January 21st, 2019 at 19:18.
AndyBees is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Did I put the wrong oil in my TDI? bestsilverjetta Fuels & Lubricants 15 July 8th, 2017 04:02
Shop put the wrong oil in... 16vjohn VW MKIII-A3/B4 TDIs 8 February 19th, 2012 17:04
I think stealershhip put in wrong oil.... Dean VW B5 Passat TDIs 17 September 29th, 2011 00:02
5 years, 1 month, 3 days ago NewTdi West Coast Canada/USA 25 January 12th, 2009 19:51


All times are GMT -7. The time now is 12:24.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
© 1996 - 2017, All Rights Reserved
Page generated in 0.15225 seconds with 11 queries
[Output: 88.03 Kb. compressed to 76.73 Kb. by saving 11.30 Kb. (12.83%)]