swathdiver
Full Access Member
Howdy folks!
A few months ago I noticed that ACDelco's website https://parts-catalog.acdelco.com/catalog/catalog_search.php was showing a new oil for 4WD vehicles when I ran my VIN. The earlier 4WD long trucks came with aluminum engine blocks and thus see more expansion than cast iron blocks during operation. I'd been a little concerned that M1 was too thin, the motor noisy at start up which is "normal" and then quieted down. It also ran so much better with 4,000 OCIs compared to 5K-6K changes.
Anyhow, I researched the oil as best I could and found an SDS sheet with some specs and it showed higher viscosity numbers than the regular Mobil 1 I've been running. The oil is made by Phillips 66 Lubricants.
To make a long story short, getting hold of this stuff was not easy at first. First two companies had large minimums, one wanted me to buy 12 bottles, the other 195! Well, after more searching I found it down in Palm Beach county for $22 a bottle and it comes in case form, 3 bottles.
Since the change there is no more rattling cold motor starts and the oil pressure has actually increased all across the spectrum. I would say when hot, it is running about 3 psi more than before and a lot more when cold. I've NEVER seen the oil pressure gauge so high before. Idling at temperature is about 29 psi according to the Tech-2.
A while back we were all talking about pressures and I noticed that the Mobil 1 oil filter lowered my oil pressure, using the M1-212A and would alternate based on access and sales with the K&N HP2011. These are the long filters. Well, the K&N definitely allows for a higher oil pressure and that one inch nut makes removal a breeze (shhh, don't tell anyone that we use it to tighten the filter too!) I think the K&N gave about 2-3 more psi too.
5 Quart Bottles:
GM PN# 88865743
AC Delco PN# 10-9147
1 Quart Bottles
GM PN# 88865905
AC Delco PN# 10-9234
At the end of the second oil change with this stuff, we'll send off a sample to Blackstone Labs. I have another sample of M1 sitting on my desk here waiting to go out too.
If anyone tries it, please let us know your experience with it too.
A few months ago I noticed that ACDelco's website https://parts-catalog.acdelco.com/catalog/catalog_search.php was showing a new oil for 4WD vehicles when I ran my VIN. The earlier 4WD long trucks came with aluminum engine blocks and thus see more expansion than cast iron blocks during operation. I'd been a little concerned that M1 was too thin, the motor noisy at start up which is "normal" and then quieted down. It also ran so much better with 4,000 OCIs compared to 5K-6K changes.
Anyhow, I researched the oil as best I could and found an SDS sheet with some specs and it showed higher viscosity numbers than the regular Mobil 1 I've been running. The oil is made by Phillips 66 Lubricants.
To make a long story short, getting hold of this stuff was not easy at first. First two companies had large minimums, one wanted me to buy 12 bottles, the other 195! Well, after more searching I found it down in Palm Beach county for $22 a bottle and it comes in case form, 3 bottles.
Since the change there is no more rattling cold motor starts and the oil pressure has actually increased all across the spectrum. I would say when hot, it is running about 3 psi more than before and a lot more when cold. I've NEVER seen the oil pressure gauge so high before. Idling at temperature is about 29 psi according to the Tech-2.
A while back we were all talking about pressures and I noticed that the Mobil 1 oil filter lowered my oil pressure, using the M1-212A and would alternate based on access and sales with the K&N HP2011. These are the long filters. Well, the K&N definitely allows for a higher oil pressure and that one inch nut makes removal a breeze (shhh, don't tell anyone that we use it to tighten the filter too!) I think the K&N gave about 2-3 more psi too.
5 Quart Bottles:
GM PN# 88865743
AC Delco PN# 10-9147
1 Quart Bottles
GM PN# 88865905
AC Delco PN# 10-9234
At the end of the second oil change with this stuff, we'll send off a sample to Blackstone Labs. I have another sample of M1 sitting on my desk here waiting to go out too.
If anyone tries it, please let us know your experience with it too.
